TABLES.

Table 1.—Classification of the first generation of offspring in the plus selection series. At the head of each column is indicated the grade of the individuals recorded in that column. The figures in the body of the table indicate the numbers of offspring of the several grades indicated.

Grade of parents.	Grade of offspring.									Totals.	Means.	Regression.
Grade of parents.	+1	1¼	1½	1¾	2	2¼	2½	2¾	3	Totals.	Means.	Regression.
1⅞	1	1	1	1	1		1	1		7	1.82	.05
2	4	1	3	1	4	1	4			18	1.76	.24
2⅛
2¼	3	1	3	1	6	2	2	2		20	1.87	.38
2⅜
2½	5		3	1	13	1	8	5	1	37	2.06	.44
2⅝						1	1	2	1	5	2.15	.47
2¾	7		3	2	17	1	12		9	51	2.12	.63
2⅞
3				2	3	1	3		3	12	2.35	.65
Totals or means, 2.51	20	3	13	8	44	7	31	10	4	150	2.05	.46

Table 2.—Classification of offspring in generation 2, plus selection series.

Grade of parents.	Grade of offspring.																				Totals.	Means.	Regression.
Grade of parents.	-1	-¾	-½	-¼	0	+¼	½	¾	1	1¼	1½	1¾	2	2¼	2½	2¾	3	3¼	3½	3¾	Totals.	Means.	Regression.
2			1		1			4	2	5	7	3	7	8	2	3	2	1			46	1.70	.30
2⅛	1		1		2	1	3	5	12	8	5	5	8	2	1	2					56	1.28	.82
2¼										1	1	3	1	1		1					8	1.87	.38
2⅜									1	1	4	9	7	8	8	6	1				45	1.92	.45
2½								4	22	16	19	11	21	13	7	10	9	1			133	1.80	.70
2⅝					1		2		3	1		6	5	7	9	6	3	1			44	2.11	.51
2¾				1				3	4	2	6	5	9	6	9	6	1				52	1.92	.83
2⅞										1		1	3	5	3	9	1				23	2.41	.46
3									1	2	3	2	14	7	4	5	11	6	3	1	59	2.47	.53
3½													2		1		2				5	2.50	.62
Totals or means, 2.52	1	-	2	1	4	1	5	16	45	37	45	45	77	57	44	48	30	9	3	1	471	1.92	.60

Table 3.—Classification of offspring in generation 3, plus selection series.

Grade of parents.	Grade of offspring.														Totals.	Means.	Regression.
Grade of parents.	¾	1	1¼	1½	1¾	2	2¼	2½	2¾	3	3¼	3½	3¾	4	Totals.	Means.	Regression.
2⅛			1	1	5	6	4	1	3						21	2.06	.06
2¼
2⅜					5	5	1	4	2						17	2.15	.22
2½	1	2	1	2	5	5	10	10	9	7	2				54	2.32	.18
2⅝			2	1	3	9	4	5	15	18	3	1	2	1	64	2.64	-.02
2¾				2	1	7	10	7	7	7	1	1			43	2.46	.29
2⅞			1			7	3	7	9	10	9	1			47	2.70	.17
3				2	1	12	14	11	17	11	3				71	2.49	.51
3⅛									2	5	1	2			10	3.07	.05
3¼									1	2		1	2		6	3.17	.08
3⅜								2	1	3	2				8	2.91	.46
Totals or means, 2.73	1	2	5	8	20	51	46	47	66	63	21	6	4	1	341	2.51	.22

Table 4.—Classification of offspring, generation 4, plus selection series.

Grade of parents.	Grade of offspring.													Totals.	Means.	Regression.
Grade of parents.	¾	1	1¼	1½	1¾	2	2¼	2½	2¾	3	3¼	3½	3¾	Totals.	Means.	Regression.
2½					2		2		4	3				11	2.55	.05
2⅝
2¾						3	3	2	3	4	3			18	2.65	.10
2⅞		1					3	3	7	15	4	3	2	37	2.97	.10
3		1		1	7	12	25	19	35	29	9	4	1	143	2.60	.40
3⅛			1		2	11	14	21	28	30	11	2	2	122	2.69	.43
3¼				1		1	6	8	13	17	9	8	1	64	2.89	.36
3⅜					1		6	2	3	9	2			23	2.70	.67
3½						3	1		2	3	6	2	3	20	3.02	.48
3⅝
3¾								3	1	1	1			6	2.75	1.00
Totals or means, 3.09	1	1	1	2	12	30	60	58	96	110	45	19	9	444	2.73	.36

Table 5.—Classification of generation 5, plus selection series.

Grade of parents.	Grade of offspring.															Totals.	Means.	Regression.
Grade of parents.	¾	1	1¼	1½	1¾	2	2¼	2½	2¾	3	3¼	3½	3¾	4	4¼	Totals.	Means.	Regression.
2¾						1			2	4	4	1				12	3.00	-.25
2⅞							4	4	4	2	3	2	2			21	2.87	0
3							1	5	3	2	3	1				15	2.81	.19
3⅛		1	1	1	1	8	9	14	20	29	18	8	3	1		114	2.81	.31
3¼	1	1	1		4	12	6	14	24	39	27	7		1	1	138	2.81	.44
3⅜				1	1	5	14	11	25	36	28	15	7	2		145	2.94	.43
3½						6	5	10	14	16	8	8	3			69	2.86	.64
3⅝						3	3	5	7	16	12	11	4	3		64	3.08	.54
3¾								2	2	4	3	2	1			14	3.07	.68
3⅞							1	1		1		1	2	2		8	3.35	.52
4							1			1	1	1	2	1		7	3.36	.64
4⅛						1				1				1		3	3.00	1.12
Totals or means, 3.33	1	2	2	2	6	35	44	66	101	151	107	57	24	11	1	610	2.90	.43

Table 6.—Classification of generation 6, plus selection series.

Grade of parents.	Grade of offspring.													Totals.	Means.	Regression.
Grade of parents.	1½	1¾	2	2¼	2½	2¾	3	3¼	3½	3¾	4	4¼	4½	Totals.	Means.	Regression.
3						1				1				2
3⅛		3	4	1	1	4	7	5	3					28	2.84	.28
3¼	1		3	3	8	26	31	31	24	15	1			143	3.10	.15
3⅜	1		5	6	13	20	28	30	14	5				123	2.96	.41
3½		1	9	4	15	29	49	41	43	17	4			212	3.10	.40
3⅝			4	8	11	24	34	36	37	21	5		1	181	3.16	.46
3¾	1	1	2	1	3	4	18	13	20	13	2			78	3.22	.53
3⅞			4	1	3	5	14	15	20	14	4			80	3.26	.61
4			1				2	1	5	4	1			14	3.41	.59
Totals or means, 3.52	3	5	32	24	54	113	183	172	166	90	17		1	861	3.11	.41

Table 7.—Classification of generation 7, plus selection series.

Grade of parents.	Grade of offspring.														Totals.	Means.	Regression.
Grade of parents.	1½	1¾	2	2¼	2½	2¾	3	3¼	3½	3¾	4	4¼	4½	4¾	Totals.	Means.	Regression.
3⅛			2	2	4	5	7	4	3	1					28	2.87	.25
3¼	1		6	11	7	11	30	19	22	23	1				131	3.09	.16
3⅜	1	2	10	18	17	21	27	18	21	20	4	1			160	2.97	.40
3½			6	9	9	21	31	28	35	34	3	1			177	3.18	.32
3⅝			7	11	13	26	47	53	75	49	7	1			289	3.23	.39
3¾			2	3	3	16	28	25	58	42	4	3			184	3.35	.40
3⅞			2	1	2	4	10	12	23	21	6	6	2	1	90	3.49	.38
4					1	1	3		2	4	3			1	15	3.53	.47
4⅛									1	1	1				3	3.75	.50
Totals or means, 3.56	2	2	35	55	56	105	183	159	240	195	29	12	2	2	1077	3.20	.36

Table 8.—Classification of generation 8, plus series.

Grade of parents.	Grade of offspring.												Totals.	Means.	Regression.
Grade of parents.	1¾	2	2¼	2½	2¾	3	3¼	3½	3¾	4	4¼	4½	Totals.	Means.	Regression.
3¼						2		2					4	3.25	0
3⅜
3½				1	4	6	9	18	17	2	2		59	3.46	.04
3⅝	1	2	9	13	30	69	44	144	149	22	1		484	3.50	.12
3¾		2	1	9	12	55	39	152	173	23	2		469	3.49	.26
3⅞		1	2		4	23	18	98	69	19	2	1	238	3.53	.34
4			1	2	3	10	6	34	6	1	1		64	3.31	.69
4⅛					2	5	2	14	13	14	10		60	3.72	.40
4¼							1	7	11	2	1		22	3.69	.56
4⅜									2	5	1		8	3.96	.41
Totals or means, 3.75	1	5	13	25	55	170	119	469	440	88	20	1	1408	3.48	.27

Table 9.—Classification of generation 9, plus series.

Grade of parents.	Grade of offspring.												Totals.	Means.	Regression.
Grade of parents.	1¾	2	2¼	2½	2¾	3	3¼	3½	3¾	4	4¼	4½	Totals.	Means.	Regression.
3½				1			1	1	1				4	3.25	.25
3⅝		1	1	6	12	28	26	96	63	10	1		244	3.43	.19
3¾	1	2	4	7	19	45	50	224	212	25	2		591	3.50	.25
3⅞				2	5	25	32	105	177	64	8	6	424	3.65	.22
4				1	2	5		14	15	7		1	45	3.57	.43
4⅛						2			4	1			7	3.57	.55
4¼							1		1	2			4	3.75	.50
4⅜								3					3	3.50	.87
Totals or means, 3.78	1	3	5	17	38	105	110	443	473	109	11	7	1322	3.54	.24

Table 10.—Classification of generation 10, plus series.

Grade of parents.	Grade of offspring.											Totals.	Means.	Regression.
Grade of parents.	2¼	2½	2¾	3	3¼	3½	3¾	4	4¼	4½	5	Totals.	Means.	Regression.
3¾		1	1	9	13	63	117	44	8	1		257	3.69	.06
3⅞	1		3	3	16	95	142	62	20	5		347	3.72	.15
4					4	26	61	20	7	2		120	3.76	.24
4⅛						11	17	7	6	1	2	44	3.87	.25
4¼						1	4	2	1			8	3.84	.41
Totals or means, 3.88	1	1	4	12	33	196	341	135	42	9	2	776	3.73	.15

Table 11.—Classification of generation 11, plus series.

Grade of parents.	Grade of offspring.										Totals.	Means.	Regression.
Grade of parents.	2¾	3	3¼	3½	3¾	4	4¼	4½	4¾	5	Totals.	Means.	Regression.
3¾				2	7	2					11	3.75	0
3⅞	2	7	17	87	162	41	11	3	3		333	3.70	.17
4		3	2	25	87	65	24	6	1	1	214	3.87	.13
4⅛		3	3	16	49	27	8	2	2		110	3.81	.31
4¼				2	13	5	3	1	1		25	3.91	.34
4⅜					1	3					4	3.94	.43
Totals or means, 3.97	2	13	22	132	319	143	46	12	7	1	697	3.78	.19

Table 12.—Classification of generation 12, plus series.

Grade of parents.	Grade of offspring.											Totals.	Means.	Regression.
Grade of parents.	2½	3	3¼	3½	3¾	4	4¼	4½	4¾	5	5¼	Totals.	Means.	Regression.
3¾					4	20	7	4				35	3.83	-.08
3⅞				2	19	17	6	2	2			48	3.96	.09
4		1	1	10	53	59	12	5	1	1	2	145	3.93	.07
4⅛	1		2	17	86	83	28	6	3	1		227	3.91	.21
4¼		1		7	19	29	11	3	1			71	3.94	.31
4⅜				3	6	14	10	7	3	1	1	45	4.13	.24
4½					1	4	1			1		7	4.14	.36
4⅝		1			3	4	3					11	3.90	.72
5									1			1	4.75	.25
Totals or means, 4.09	1	3	3	43	207	217	75	23	11	4	3	590	3.94	.17

Table 13.—Classification of generation 13, plus selection series.

Grade of parents.	Grade of offspring.								Totals.	Means.	Regression.
Grade of parents.	2¾	3¼	3½	3¾	4	4¼	4½	4¾	Totals.	Means.	Regression.
4		4	17	23	19	2			65	3.67	.31
4⅛			1	8	16	5	1		31	3.97	.15
4¼	1		5	10	20	6		1	43	3.93	.32
4⅜			1	5	3	1			10	3.85	.52
4½			1	14	15	7	3		40	3.98	.52
4⅝				3	1		1		5	3.95	.80
Totals or means, 4.22	1	4	25	63	74	21	5	1	194	3.88	.34

Table 14.—Summary of the results of thirteen generations of plus selection based on Tables 1-13.

Generation.	No. of offspring.	Mean, parents.	Mean, offspring.	Standard deviation, parents.	Standard deviation, offspring.	Correlation, parents-offspring.	Absolute regression of offspring on parents.	Advance of parents.	Advance of offspring.
1	150	2.51	2.05	.313	.541	.298	.46
2	471	2.52	1.92	.307	.732	.317	.60	.01	-.13
3	341	2.73	2.51	.285	.531	.331	.22	.21	.59
4	444	3.09	2.73	.215	.468	.066	.36	.36	.22
5	610	3.33	2.90	.240	.505	.160	.43	.24	.17
6	861	3.52	3.11	.209	.490	.180	.41	.19	.21
7	1,077	3.56	3.20	.212	.555	.215	.36	.04	.09
8	1,408	3.75	3.48	.246	.439	.099	.27	.19	.28
9	1,322	3.78	3.54	.112	.346	.210	.24	.03	.06
10	776	3.88	3.73	.112	.362	.116	.15	.10	.19
11	697	3.98	3.78	.113	.289	.233	.20	.10	.05
12	590	4.09	3.94	.176	.302	.161	.15	.11	.16
13	194	4.22	3.88	.433	.270	.132	.34	.13	-.06
Total	8,941

Table 15.—Mean grade and number of offspring produced by parents of a particular grade in each generation of the plus selection series, based on Tables 1-13. The grade of the parents is indicated at the head of each column. In the body of the table is recorded the grade of the offspring (in light-faced figures) and the number of offspring (in heavy-faced figures).

Generation.	Grade of parents; below, grade and number of their offspring.																							Total number of offspring.
Generation.	2	2⅛	2¼	2⅜	2½	2⅝	2¾	2⅞	3	3⅛	3¼	3⅜	3½	3⅝	3¾	3⅞	4	4⅛	4¼	4⅜	4½	4⅝	4¾	Total number of offspring.
1	1.76		1.87		2.06	2.15	2.12		2.35
	18		20		37	5	51		12
2	1.70	1.28	1.87	1.92	1.80	2.11	1.92	2.41	2.47	2.50
	46	56	8	45	133	44	52	23	59	5
3		2.06		2.15	2.32	2.63	2.46	2.70	2.49	3.07	3.17	2.91
		21		17	54	64	43	47	71	10	6	8
4					2.55		2.65	2.97	2.60	2.69	2.89	2.70	3.02		2.75
					11		18	37	143	122	64	23	20		6
5							3.00	2.87	2.81	2.81	2.81	2.94	2.87	3.08	3.07	3.35	3.36	3.00
							12	21	15	114	138	145	69	64	14	8	7	3
6									3.25	2.84	3.10	2.96	3.10	3.16	3.22	3.26	3.41
									2	28	143	123	212	181	78	80	14
7										2.87	3.09	2.97	3.18	3.23	3.35	3.49	3.53		3.75
										28	131	160	177	289	184	90	15		3					1,077
8													3.46	3.50	3.49	3.53	3.31	3.72	3.69	3.96
													59	484	469	238	64	60	22	8				1,408
9													3.25	3.43	3.50	3.65	3.57	3.57	3.75	3.50
													4	244	591	424	45	7	4	3				1,322
10															3.69	3.72	3.76	3.87	3.84
															257	347	120	44	8					776
11															3.75	3.70	3.87	3.81	3.91	3.94
															11	333	214	110	25	4				697
12															3.82	3.96	3.93	3.91	3.94	4.12	4.14	3.90	4.75
															35	48	145	227	71	45	7	11	1	590
13																	3.67	3.97	3.93	3.85	3.98		3.95
																	65	31	43	10	40		5	194
																								8,941

Table 16.—Classification of the offspring in generation 1 of the minus selection series.

Grade of parents.	Grade of offspring.										Totals.	Means.	Regression.
Grade of parents.	+¼	0	¼	½	¾	1	1¼	1½	1¾	2	Totals.	Means.	Regression.
-1¼	1					2		3	2		8	1.34	-.09
1⅜	1	1	3		12	8	3	1	1	1	31	.86	.51
1½					1	1	1	1	1	1	6	1.37	.13
1⅞			1	1	2	2		3	1		10	1.05	.82
Totals or means, 1.46	2	1	4	1	15	13	4	8	5	2	55	1.00	.46

Table 17.—Classification of generation 2, minus selection series.

Grade of parents.	Grade of offspring.										Totals.	Means.	Regression.
Grade of parents.	+½	0	-¼	½	¾	1	1¼	1½	1¾	2	Totals.	Means.	Regression.
¾	1		2	2	1	6	2	3	2		19	1.04	-.29
1⅛			2	2		2	2	3		1	12	1.05	.07
1¼					4	6	3		3	1	17	1.18	.07
1⅜		1						1	1	2	5	1.45	-.08
1½			1		10	13	1	8	4		37	1.11	.39
1⅝		1			1		1				3	.67	.95
1¾			1	1	2	14	4	3	1	1	27	1.09	.66
1⅞	1	1		1	2	3		1	3		12	1.10	.77
Totals or means, 1.41	2	3	6	6	20	44	13	19	14	5	132	1.07	.34

Table 18.—Classification of generation 3, minus series.

Grade of parents.	Grade of offspring.									Totals.	Means.	Regression.
Grade of parents.	0	-¼	½	¾	1	1¼	1½	1¾	2	Totals.	Means.	Regression.
-1⅛			2	1	1		1			5	.85	.27
1¼		1	3	6	5	1	2	1	1	20	1.05	.20
1⅜		1	3	4	11	3	4	2		28	1.03	.34
1½			1	1	12	1	5	5	3	28	1.31	.19
1⅝	1	1	1	10	10	5	8	8	4	48	1.22	.40
1¾		1	2	8	19	9	9	7	8	63	1.26	.49
1⅞					3					3	1.00	.87
Totals or means, 1.56	1	4	12	30	61	19	29	23	16	195	1.18	.38

Table 19.—Classification of generation 4, minus selection series.

Grade of parents.	Grade of offspring.												Totals.	Means.	Regression.
Grade of parents.	+½	+¼	0	-¼	½	¾	1	1¼	1½	1¾	2	2¼	Totals.	Means.	Regression.
-1¼							1		1	1	1		4	1.56	-.31
1⅜				2	3	4	8	3	1	2	6		29	1.16	.21
1½		1	1	3	2	7	7	6	8	16	8		59	1.31	.19
1⅝				1		4	10	4	8	7	6		40	1.36	.26
1¾				4	4	6	19	11	16	22	11		93	1.34	.41
1⅞	2	1	2	6	1	10	19	12	17	19	5	1	95	1.18	.69
2						1	2	3		1	2		9	1.36	.64
Totals or means, 1.69	2	2	3	16	10	32	66	39	51	68	39	1	329	1.28	.41

Table 20.—Classification of generation 5, minus series.

Grade of parents.	Grade of offspring.											Totals.	Means.	Regression.
Grade of parents.	0	-¼	½	¾	1	1¼	1½	1¾	2	2¼	2½	Totals.	Means.	Regression.
⅞	2	1		4	5		3	4	1			20	1.09	-.22
1		2			1				1			4	.99	.01
1⅜		4	1	1	6	2	10	14	11	2		51	1.50	-.13
1½	1		3	9	9	11	7	7	5		1	53	1.25	.25
1⅝		1	1	5	12	4	15	12	4			54	1.35	.27
1¾		9	14	29	50	30	50	55	24	1		262	1.30	.45
1⅞				4	11	12	29	50	31	6		143	1.64	.23
2		1	2	11	14	5	19	28	25	4		109	1.52	.48
2⅛							1	2	2			5	1.80	.32
Totals or means, 1.73	3	18	21	63	108	64	134	172	104	13	1	701	1.41	.32

Table 21.—Classification of generation 6, minus series.

Grade of parents.	Grade of offspring.											Totals.	Means.	Regression.
Grade of parents.	0	-¼	½	¾	1	1¼	1½	1¾	2	2¼	2½	Totals.	Means.	Regression.
-1⅛		1	1		2		1					5	.85	.27
1⅜					1	1	1		1			4	1.44	-.07
1½			1	3	4	4	4	6	2			24	1.34	.16
1⅝	1		1	11	16	3	17	28	17			94	1.45	.17
1¾	1	1	8	14	39	20	39	77	43		2	244	1.49	.26
1⅞		1	9	24	61	40	71	156	127	12	1	502	1.59	.28
2	1	3	5	12	32	22	37	89	76	5	1	283	1.58	.42
2⅛				2	4	4	5	35	31	4		85	1.52	.60
2½							2	5	3	1		11	1.82	.68
Totals or means, 1.86	3	6	25	66	159	94	177	396	300	22	4	1252	1.56	.30

Table 22.—Classification of generation 7, minus series.

Grade of parents.	Grade of offspring.												Totals.	Means.	Regression.
Grade of parents.	0	¼	½	¾	1	1¼	1½	1¾	2	2¼	2½	2¾	Totals.	Means.	Regression.
1⅝				1			1	2	1				5	1.55	.07
1¾			1	2	1	1	6	11	9			1	32	1.67	.08
1⅞	2	1	6	4	35	20	47	99	106	6	3	1	330	1.65	.22
2			8	14	51	60	119	368	324	22	3		969	1.72	.28
2⅛		1	2	3	14	10	30	92	104	4			260	1.74	.38
2¼							5	10	19	6	1		41	1.93	.32
2⅜							2	2					4	1.63	.74
2½						1		4	10				15	1.88	.62
2⅝							1	3	8	5	1		18	2.28	.09
2¾								3	3				6	1.87	.88
Totals or means, 2.01	2	2	17	24	101	92	211	594	584	43	8	2	1680	1.73	.28

Table 23.—Classification of generation 8, minus series.

Grade of parents.	Grade of offspring.											Totals.	Means.	Regression.
Grade of parents.	0	½	¾	1	1¼	1½	1¾	2	2¼	2½	2¾	Totals.	Means.	Regression.
1⅞				1			9	8	1			19	1.84	.03
2		6	8	38	22	122	550	423	21	9	3	1202	1.81	.19
2⅛	1		3	12	7	31	118	187	32	2	3	396	1.86	.26
2¼				1		2	19	20	3			45	1.87	.38
2⅜					1	1	11	17				30	1.87	.50
2½						3	6	15	4			28	1.93	.57
2⅝						3	2	1				6	1.67	.95
Totals or means, 2.05	1	6	11	52	30	162	715	671	61	11	6	1726	1.80	.25

Table 24.—Classification of generation 9, minus series.

Grade of parents.	Grade of offspring.										Totals.	Means.	Regression.
Grade of parents.	½	¾	1	1¼	1½	1¾	2	2¼	2½	2¾	Totals.	Means.	Regression.
2		1	13	4	36	268	420	55	10	4	811	1.90	.10
2⅛			1	1	25	110	218	40	7	1	403	1.93	.19
2¼	1			1	7	43	77	12	6	1	148	1.93	.32
2⅜			1	1	7	61	89	12	4		175	1.91	.46
2½			1		2	6	23	14	5	2	53	2.07	.43
2⅝							1				1	2.00	.62
Totals or means, 2.11	1	1	16	7	77	488	828	133	32	8	1591	1.92	.19

Table 25.—Classification of generation 10, minus series.

Grade of parents.	Grade of offspring.										Totals.	Means.	Regression.
Grade of parents.	-1	1¼	1½	1¾	2	2¼	2½	2¾	3	3¼	Totals.	Means.	Regression.
2	1	2	13	120	287	43	7	2	2	1	478	1.96	.04
2⅛	2	1	15	100	251	78	22	4		1	474	2.00	.12
2¼			5	45	92	58	13	4			217	2.05	.20
2⅜		1	4	16	60	29	6	3			119	2.05	.32
2½				9	27	19	10	2			67	2.13	.37
2⅝			1	5	17	17	8		1		49	2.15	.47
2¾		1	1	8	10	6	1				27	1.95	.80
2⅞		1	1	2	3	6	5	2			20	2.19	.68
Totals or means, 2.18	3	6	40	305	747	256	72	17	3	2	1451	2.01	.17

Table 26.—Classification of generation 11, minus series.

Grade of parents.	Grade of offspring.											Totals.	Means.	Regression.
Grade of parents.	-1	1¼	1½	1¾	2	2¼	2½	2¾	3	3¼	3½	Totals.	Means.	Regression.
2				7	26	14	3		1			51	2.08	.08
2⅛			4	20	75	45	26	12		1		183	2.15	-.03
2¼	1		12	49	111	76	50	13	6			318	2.13	.12
2⅜	2	1	4	24	112	66	33	20	4	2		268	2.16	.21
2½			1	4	32	21	16	7				81	2.21	.29
2⅝		1		3	18	15	11	4				52	2.20	.42
2¾			1	4	9	4	3	1	1	2	1	26	2.26	.49
2⅞				2	2	1						5	1.95	.92
Totals or means, 2.30	3	2	22	113	385	242	142	57	12	5	1	984	2.15	.15

Table 27.—Classification of generation 12, minus series.

Grade of parents.	Grade of offspring.										Totals.	Means.	Regression.
Grade of parents.	1	1½	1¾	2	2¼	2½	2¾	3	3¼	3½	Totals.	Means.	Regression.
2			2	7	1						10	1.98	.02
2⅛		1	6	65	26	15	4			1	118	2.14	-.02
2¼	1	2	16	67	45	29	6				155	2.15	.10
2⅜		1	21	116	64	24	3	1			230	2.11	.26
2½		1	12	81	75	53	17	3			242	2.24	.26
2⅝			5	38	36	37	12	8	1		137	2.32	.30
2¾				8	7	14	10	3			42	2.45	.30
2⅞			1	7	9	14	15	7			53	2.51	.36
3				5	5	5	10	5	2	1	35	2.65	.35
Totals or means, 2.44	1	5	63	394	268	191	83	27	3	2	1037	2.23	.21

Table 28.—Classification of generation 13, minus series.

Grade of parents.	Grade of offspring.								Totals.	Means.	Regression.
Grade of parents.	1¾	2	2¼	2½	2¾	3	3¼	3½	Totals.	Means.	Regression.
2¼	3	30	12	17	4	1			67	2.22	.03
2⅜	4	40	50	46	24	5	1		170	2.35	.02
2½	4	32	34	47	26	8	2	1	154	2.40	.10
2⅝	2	11	21	41	28	3	2		108	2.47	.15
2¾	1	5	2	9	7	6	1		31	2.56	.19
2⅞		4	7	8	6	1			26	2.43	.44
3		3	1	5	5	1			15	2.50	.50
Totals or means, 2.50	14	125	127	173	100	25	6	1	571	2.39	.11

Table 29.—Summary of the results of thirteen generations of minus selection, based on Tables 16-28.

Generation.	No. of offspring.	Mean, parents.	Mean, offspring.	Standard deviation, parents.	Standard deviation, offspring.	Correlation, parents-offspring.	Absolute regression of offspring on parents.	Advance of parents.	Advance of offspring.
1	5	1.46	1.00	.208	.515		.46
2	13	1.41	1.07	.342	.493	-.033	.34	-.05	.07
3	19	1.56	1.18	.196	.484	.206	.38	.15	.11
4	32	1.69	1.28	.190	.460	.020	.41	.13	.10
5	70	1.73	1.41	.233	.500	.184	.32	.04	.13
6	1,25	1.86	1.56	.185	.488	.164	.30	.13	.15
7	1,68	2.01	1.73	.132	.352	.143	.28	.15	.17
8	1,72	2.05	1.80	.107	.283	.094	.25	.04	.07
9	1,59	2.11	1.92	.184	.285	.059	.19	.06	.12
10	1,45	2.18	2.01	.255	.242	.158	.17	.07	.09
11	98	2.30	2.15	.229	.349	.081	.15	.12	.14
12	1,03	2.44	2.23	.310	.372	.406	.07	.14	.08
13	57	2.50	2.39	.177	.317	.235	.11	.06	.16
Total	11,704

Table 30.—Mean grade and number of offspring produced by parents of a particular grade in each generation of the minus selection series, based on Tables 16-28. The grade of the parents is indicated at the head of each column. In the body of the table is recorded the mean grade of the offspring (in light-faced figures) and the number of offspring (in heavy-faced figures).

Generation.	Grade of parents; below, grade and number of their offspring.															Total number of offspring.
Generation.	1¼	1⅜	1½	1⅝	1¾	1⅞	2	2⅛	2¼	2⅜	2½	2⅝	2¾	2⅞	3	Total number of offspring.
1	1.34	.85	1.37			1.05
	8	31	6			10										55
2	1.17	1.45	1.11	0.67	1.09	1.10
	17	5	37	3	27	12										132
3	1.05	1.04	1.31	1.22	1.26	1.96
	20	28	28	48	63	3										195
4	1.56	1.16	1.31	1.36	1.34	1.18	1.36
	4	29	59	40	93	95	9									329
5		1.50	1.25	1.35	1.30	1.64	1.52	1.80
		51	53	54	262	143	109	5								701
6			1.34	1.46	1.49	1.59	1.58	1.52			1.82
			24	94	244	502	283	85			11					1,252
7				1.55	1.67	1.65	1.72	1.74	1.93	1.62	1.88	2.28	1.87
				5	32	330	969	260	41	4	15	18	6			1,680
8						1.84	1.81	1.86	1.87	1.87	1.92	1.67
						19	1170	377	36	30	17	6				1,726
9							1.90	1.93	1.93	1.91	2.07
							811	403	148	175	53					1,591
10							1.96	2.00	2.04	2.05	2.13	2.15	1.95	2.18
							478	474	217	119	67	49	27	20		1,451
11							2.08	2.15	2.13	2.16	2.21	2.20	2.26	1.95
							51	183	318	268	81	52	26	5		984
12							1.98	2.14	2.15	2.11	2.24	2.32	2.45	2.51	2.65
							10	118	166	230	242	137	42	53	35	1,037
13									2.22	2.35	2.40	2.47	2.55	2.43	2.50
									67	170	154	108	31	26	15	571
																11,704

Table 31.—Results of a first return selection from generation 6, minus series.

Grade of parents.	Grade of offspring.									Totals.	Means.	Regression.
Grade of parents.	0	¼	½	¾	-1	-1¼	-1½	-1¾	-2	Totals.	Means.	Regression.
⅜		2	1		3	4	8	8		26	1.08	-.60
⅝	2	2	3	4	10	14	17	20	4	76	1.33	-.71
¾				1	1		2	1		5	1.30	-.65
⅞			2		2		1	4	2	11	1.41	-.63
Totals or means, .60	2	4	6	5	16	18	28	33	6	118	1.28	-.68

Table 32.—Results of a second return selection from generation 6, minus series.

Grade of parents.	Grade of offspring.						Totals.	Means.	Regression.
Grade of parents.	0	½	¾	-1	-1¼	-1½	Totals.	Means.	Regression.
½	1	3	4	5	2	4	19	.95	-.45

Table 33.—Results of a third return selection from generation 6, minus series.

Grade of parents.	Grade of offspring.									Totals.	Means.	Regression.
Grade of parents.	0	¼	½	¾	-1	-1¼	-1½	-1¾	-2	Totals.	Means.	Regression.
¼		5	2	2	3		1			13	.63	-.38
⅜	2	2	3	5	4		2	3		21	.86	-.49
-1⅛					1	2	3	4	3	13	1.61	-.49
-1¼			1	2	4	9	8	5	2	31	1.35	-.10
Totals or means, .83	2	7	6	9	12	11	14	12	5	78	1.14	-.31

Table 34.—Results of a fourth return selection from generation 6, minus series.

Grade of parents.	Grade of offspring.									Totals.	Means.	Regression.
Grade of parents.	0	¼	½	¾	-1	-1¼	-1½	-1¾	-2	Totals.	Means.	Regression.
¼	1		2	1	1	4	2	3	2	16	1.34	-1.09
½		1	1	1	2					5	.70	-.20
⅝			1	1		1				3	.83	-.21
¾	1	1		1		2	1			6	.83	-.08
⅞	1		2		2	2	2		1	10	1.17	-.30
-1					2	1	3	3	1	10	1.42	-.42
Totals or means, .63	3	2	6	4	7	10	8	6	4	50	1.17	-.54

Table 35.—Results of a fifth return selection from generation 6, minus series.

Grade of parents.	Grade of offspring.						Totals.	Means.	Regression.
Grade of parents.	0	¼	½	¾	-1¼	-1½	Totals.	Means.	Regression.
¼				2	2		4	1.00	-.75
¾	1					3	4	1.12	-.37
⅞	2	2	1				5	.25	+.62
Totals or means, .65	3	2	1	2	2	3	13	.75	-.10

Table 36.—Results of a sixth return selection from generation 6, minus series.

Grade of parents.	Grade of offspring.													Totals.	Means.	Regression.
Grade of parents.	+1¼	+1	+¾	+½	+¼	0	¼	½	¾	-1	-1¼	-1½	-1¾	Totals.	Means.	Regression.
⅛	1		1			3	2	1		2	2			12	.29	-.17
¼				2	1	1	4		1	4				13	.35	-.10
⅜							1		2	1		1	1	6	.87	-.50
½		1						1	2	1				5	.25	+.25
Totals or means, .26	1	1	1	2	1	4	7	2	5	8	2	1	1	36	.39	-.13

Table 37.—Results of a return selection from generation 7, minus series.

Grade of parents.	Grade of offspring.							Totals.	Means.	Regression.
Grade of parents.	½	¾	-1	-1¼	-1½	-1¾	-2	Totals.	Means.	Regression.
¾		1	3	3	7	8	3	25
⅞	2	2	2			2		8
Totals or means, .78	2	3	5	3	7	10	3	33	1.15	-.37

Table 38.—Results of a return selection from generation 8, minus series.

Grade of parents.	Grade of offspring.						Totals.	Means.	Regression.
Grade of parents.	¾	-1	-1¼	-1½	-1¾	-2	Totals.	Means.	Regression.
½		1		3	6	3	13	1.69	-1.19
⅝		1			9	3	13	1.21	- .59
⅞						2	2	2.00	- .13
-1	1		2	4	4	2	13	1.56	- .56
Totals or means, .72	1	2	2	7	19	10	41	1.51	- .79

Table 39.—Results of a return selection from generation 11, minus series.

Grade of parents.	Grade of offspring.					Totals.	Means.	Regression.
Grade of parents.	¼	-1¾	-2	-2¼	-2½	Totals.	Means.	Regression.
-1⅝	1	3	7	3	2	16	1.95	-.33

Table 40.—Results of a return selection from generation 6, plus series.

Grade of parents.	Grade of offspring.									Totals.	Means.	Regression.
Grade of parents.	+½	+¾	+2	2¼	2½	2¾	3	3¼	3½	Totals.	Means.	Regression.
2	1	1	3	3	2	2	3	1	1	17	2.36	-.36

Table 41.—Results of a return selection from generation 11, plus series.

Grade of parents.	Grade of offspring.									Totals.	Means.	Regression.
Grade of parents.	2¼	2½	2¾	3	3¼	3½	3¾	4	4¼	Totals.	Means.	Regression.
2⅝	2	3	2	5	5	1	1			22
2¾			2	4	1	8	2			17
3							4	4	1	9
3¼				1			3	1		5
Totals or means, 2.79	2	3	4	10	6	12	10	5	1	53	3.32	-.53

Table 42.—Classification of the extracted hooded individuals obtained in the second generation from a cross between hooded and wild rats.

Grade of hooded grandparents.	Grade of extracted hooded grandchildren.																								Total.	Mean.	Mean, uncrossed race.	Standard deviation.	Standard deviation, uncrossed race.
Grade of hooded grandparents.	-2	-1¾	-1½	-1¼	-1	-¾	-½	-¼	0	+¼	½	¾	1	1¼	1½	1¾	2	2¼	2½	2¾	3	3¼	3½	3¾	Total.	Mean.	Mean, uncrossed race.	Standard deviation.	Standard deviation, uncrossed race.
♀ -1⅞, gen. 2½, minus series			2		4	6	5	6	13	2	1	3	4	5	3	4	2	1					1		62	+ .31	-1.20	.98	.49
♀♀ -2, gen. 6, minus series		1	1	1	1	2	6	6	7	2	3	6	4	2	4	1				1					48	+ .25	-1.59	.97	.44
♀♀ -2 and -2¼, gen. 10, minus series	1	3	3	1	10	3	9	8	14		4	7	8	1	4	3	5	2	4	1					91	+ .24	-2.05	1.18	.24
♀♀ +3, gen. 3, plus series																1	5	3	2	3	4	2	1		21	+2.56	+2.60	.50	.53
♀♀ +3¼, gen. 5 and +3½, gen. 6, plus series															1	2	1	1	1	6	9	8	8	1	38	+2.97	+3.14	.52	.49
♀ +4¼, gen. 10, plus series																	1			3	4	2	3	3	16	+3.15	+3.84	.28	.36

Table 43.—Classification of the extracted hooded individuals obtained in the second generation from a cross between hooded and Irish rats.

Grade of hooded grandparents.	Grade of extracted hooded grandchildren.																						Total.	Mean.	Mean, same grade and generation, uncrossed race.	Standard deviation.	Standard deviation, uncrossed race.
Grade of hooded grandparents.	-2	-1¾	-1½	-1¼	-1	-¾	-½	-¼	0	+¼	+½	+¾	+1	1¼	1½	1¾	2	2¼	2½	2¾	3	3¼	Total.	Mean.	Mean, same grade and generation, uncrossed race.	Standard deviation.	Standard deviation, uncrossed race.
-1½, gen. 3½	1	5	3	6	12	26	9	9	10	1	3	2	2	1									90	- .62	-1.31	.61	.48
-1⅞, gen. 4		6	3	4	5	9	14	8	1		1	1	1										53	- .73	-1.18	.60	.46
+2, gen. 7½	6	6	12	11	8	3	4	4	6	1	3					1	1						66	- .94	-1.75	.84	.35
+2¼, gen. 2					3	4	5	4	16	7	16	22	25	29	24	13	33	14	8	8	6	3	239	+1.27	+1.80	.90	.75
+3, gen. 3					2				1	1	3	3	4	2	2	1	2	1	1				23	+ .95	+2.50	.87	.53

Table 44.—F₃ generation produced by extracted hooded rats (F₂ generation) derived from a cross of a hooded rat of the minus series with a wild rat. (See Table 42.)

Grade of (F₂) parents.	Grade of (F₃) offspring.																		Totals.	Means.	Regression.
Grade of (F₂) parents.	-1	-¾	-½	-¼	0	+½	¾	1	1¼	1½	1¾	2	2¼	2½	2¾	3	3¼	3½	Totals.	Means.	Regression.
¾	2	1	4	3	4	1	2	1									1		19	+ .04	.71
2½					1	1	1	3	2	2	1	5	3	6	4	3	1	1	34	+2.06	.44

Table 45.—F₄ generation from minus series crossed with wild.

Grade of (F₃) parents.	Grade of (F₄) offspring.																Totals.	Means.	Regression.
Grade of (F₃) parents.	-¼	0	+¼	+½	¾	1	1¼	1½	1¾	2	2¼	2½	2¾	3	3¼	3½	Totals.	Means.	Regression.
2¼	2	1		1	3	6	6	9	16	25	14	10	2	1			96	1.78	.47
2⅜		2	1	1	1	6	3	8	3	9		4	4	1	1		44	1.67	.70
2⅞	1			2		1	1	1	1	1							8	.91	1.96
3				1	1	3		3	5	9	5	7	3	1		1	39	2.02	.98
3⅛								1	1	3	1	2	5	4		1	18	2.82	.30
Totals or means, 2.52	3	3	1	5	5	16	10	22	26	47	20	23	14	7	1	2	205	1.86	.66

Table 46.—F₅ generation from minus series crossed with wild.

Grade of (F₄) parents.	Grade of (F₅) offspring.													Totals.	Means.	Regression.
Grade of (F₄) parents.	0	+½	¾	1	1¼	1½	1¾	2	2¼	2½	2¾	3	3¼	Totals.	Means.	Regression.
2	1		1	3	3	2	12	15	10	2	3	1		53
2⅛				1		1	1	4	1		4		1	13
2¼						1	3	4	1	2	2			13
2⅜							1	2	3	2	4	2		14
2⅝	1	1	2	1		2								7
2⅞								2	1	1	1			5
3				1				1		1	7	4		14
Totals or means, 2.27	2	1	3	6	3	6	17	28	16	8	21	7	1	119	2.06	.21

Table 47.—F₆ generation from minus series crossed with wild.

Grade of (F₅) parents.	Grade of (F₆) offspring.														Totals.	Means.	Regression.
Grade of (F₅) parents.	+½	¾	1	1¼	1½	1¾	2	2¼	2½	2¾	3	3¼	3½	3¾	Totals.	Means.	Regression.
2⅜		1	1	1	4	8	13	4	4	7	3	2			48	2.14	.23
2½				3	2	2	4	3	3	5	4				26	2.24	.26
2⅝	1		1	1	2	1	2	3		3	4	1	1		20	2.26	.36
2¾	1			1	4	2	5		3	8	2	5			31	2.35	.40
2⅞					1		4	1	9	7	11	5	2		40	2.74	.13
3⅛						1	4	2	4	7	6	2	1	2	29	2.73	.39
Totals or means, 2.69	2	1	2	6	13	14	32	13	23	37	30	15	4	2	194	2.41	.28

Table 48.—F₇ generation from minus series crossed with wild.

Grade of (F₆) parents.	Grade of (F₇) offspring.												Totals.	Means.	Regression.
Grade of (F₆) parents.	¾	1	1½	1¾	2	2¼	2½	2¾	3	3¼	3½	3¾	Totals.	Means.	Regression.
2⅝			4	4	12	2	9	9	12	1			53	2.41	.21
2¾	3	1		2	6	5	4	4	3				28	2.14	.61
2⅞			1	1	1	2	3	1		1			10	2.32	.55
3						1	3	1	3	1	3		12	2.93	.07
3⅛		1	3	2	3	1	4	3	5	2	2	1	27	2.59	.53
3¼					3	1	3	3	1	3			14	2.63	.62
3⅜					1		2	2	2	2	1		10	2.85	.52
Totals or means, 2.80	3	2	8	9	26	12	28	23	26	10	6	1	154	2.46	.34

Table 49.—F₈ generation from minus series crossed with wild.

Grade of (F₇) parents.	Grade of (F₈) offspring.									Totals.	Means.	Regression.
Grade of (F₇) parents.	1¾	2	2¼	2½	2¾	3	3¼	3½	3¾	Totals.	Means.	Regression.
2¾				1		1				2	2.75	0
3	1	1	3	5	8		5		1	24	2.74	.01
3⅛	1	2	3	3	5	3	1	1		19	2.60	.52
Totals or means, 3.08	2	3	6	9	13	4	6	1	1	45	2.67	.41

Table 50.—Results of crossing the selected plus with the selected minus series.

Grade of parents.	Grade of offspring.																					Totals.	Means.	Standard deviation.
Grade of parents.	-2	-1¾	-1½	-1¼	-1	¾	½	¼	0	+¼	+½	+¾	+1	+1¼	+1½	+1¾	+2	+2¼	+2½	+2¾	+3½	Totals.	Means.	Standard deviation.
Series 1, F₁ generation; ♀♀ -2, gen. 6; ♂ ♂ +3½ or 3¾, gen. 5		2		2	1	8	10	13	25	2	8	11	6	3	1					1		93	+ .06	.71
Series 1, F₂ generation, -1		1	1		4		1	1	3	1	1											13	- .57	.66
½			1	2	1	3	3	2	1		1			1	1							16	- .37	.80
0			1		1	4	2	4	6	1	1	1	3	1	2	1	1					29	+ .17	.95
+⅛		1	2	1	3	3	1		5	1	4	3	2		3	1						30	+ .03	.97
+¼		2	1	2	7	3	1	2	4	1	2	2	6	1	3	3	1					41	+ .10	1.08
+½				1	1	1	4	2	4		1	1	1			1			1			18	+ .06	.91
+¾			1			2	3	1	2	1		3	2	1	1		1					18	+ .25	.90
+1			1			7	3	6	13	4	8	5	5	4	4	3	2	2	6			73	+ .60	.98
+1⅛						1	1	1	2		1	3			2	1	1					13	+ .61	.83
+1¼	1		1	1	5		7	1	8	1	5	6	4	2	4	3	1	3				53	+ .38	1.02
+1½									1													1	0
Series 1, totals or means, F₂ generation	1	4	9	7	22	24	26	20	49	10	24	24	23	10	20	13	7	5	7			305	+ .24	1.01
Series 2, F₁ generation; ♀ ♀ +3¾, gen. 10; ♂ -3¼, gen. 10								1		1	1	2	4	2	1	1		1				14	+1.00	.60
Series 2, F₂ generation, +½											1		1						1			3	+1.31
+⅝							2	1	3	3	3				1		1	1		1		16	+.40	.96
+1									2			2	1		1	1						7	+.82
+1⅛							1	1	2	1	3	4	2	1		4		1		1	1	22	+1.03	.97
+1¼					2		1	1	1	4	5	3	2	4	1		1					25	+ .56	.70
Series 2, totals or means, F₂ generation					2		4	3	8	8	12	9	6	5	3	5	2	2	1	2	1	73	+.72	.87

Table 51.—F₁ offspring of the original “mutant” male, 4763, +5½, mated with females of the plus series, and with the “mutant” female, 5153, +5¾.

Grade of mother.	Grade of offspring.
	Lower group.										Upper group.
	+3	3¼	3½	3¾	4	4¼	4½	Totals.	Means.	Standard deviation.	5	5¼	5½	5¾	6	Totals.	Means.	Standard deviation.
+3¾	1		4	11	1	1		18	3.69		1	3	9	4	1	18	5.51
3⅞			3	7	3			13	3.75		1	4	5	3		13	5.44
4		1	4	9	4	1	1	20	3.78		2	7	5	4		18	5.40
4⅛				3	1	1		5	3.90			2	4	1		7	5.46
4½			1	1				2	3.62
Totals or means	1	1	12	31	9	3	1	58	3.73	.24	4	16	23	12	1	56	5.45	.23
Mutant ♀ 5153, +5¾				3	3			6	3.87				6	4		10	5.60

Table 52.—F₁ offspring of the original mutant male, 4763, +5½, mated with females of the minus series.

Grade of mother.	Grade of offspring, lower group.																Grade of offspring, upper group.
Grade of mother.	-1	¾	½	¼	0	+¼	+½	+¾	+1	+1¼	+1½	+1¾	+2¼	Totals.	Means.	Standard deviation.	+4	+4¼	+4½	+4¾	+5	Totals.	Means.	Standard deviation.
-2	1	1	1		3	1	2	1			1	1	1	13	+.40		2	5		3	2	12	4.46
-2¼	1			1	1	2		2	2	3	1	1		14	+.70			2	4	3		9	4.53
-2½					2		1	1						4	+.31		2	3	1			6	4.21
-2¾				1	1		2							4	+.18		2	1	1			4	4.19
Totals or means	2	1	1	2	7	3	5	4	2	3	2	2	1	35	+.49	.77	6	11	6	6	2	31	4.43	.31

Table 53.—Classification of the descendants through three generations of the two original mutants, ♂ 4763, +5½, and ♀ 5153, +5¾. The parents are in every case of grade 5½ or 5¾.

Generation.	Grade of offspring.
	Lower group.							Upper group.
	3¼	3½	3¾	4	Totals.	Means.	Standard deviation.	5	5¼	5½	5¾	Totals.	Means.	Standard deviation.
F₁			3	3	6	3.87				6	4	10	5.60
F₂	1	1			2	3.37		2	3	15	10	30	5.52
F₃									1	7	3	11	5.55
Totals or means	1	1	3	3	8	3.75	.25	2	4	28	17	51	5.54	.19

Table 54.—F₂ descendants of the original mutant male, 4763, +5½, mated with females of the plus series. (Compare [Table 51].)

Grade of (F₁) parents.		Grade of (F₂) offspring.
		Lower group.										Upper group.
		3	3¼	3½	3¾	4	4¼	4½	Totals.	Means.	Standard deviation.	5	5¼	5½	5¾	Totals.	Means.	Standard deviation.
Lower group parents	3⅝	2	1	10	8	1			22	3.56
	3¾		1	2	2	7	2	1	15	3.92
	3⅞		1	2	6	8	4	1	22	3.92
Totals or means		2	3	14	16	16	6	2	59	3.78	.33
Upper group parents	5¼			1					1	3.50				2		2	5.50
	5⅜		1	1	3	1	4		10	3.90		2	6	49	13	70	5.51
	5⅝												2	5		7	5.43
Totals or means			1	2	3	1	4		11	3.86	.35	2	8	56	13	79	5.50	.15

Table 55.—F₂ descendants of the original mutant male, 4763, +5½, mated with females of the minus series. (Compare [Table 52].)

Grade of F₁ parents.	Grade of (F₂) offspring, lower group parents.																		Totals.	Means.	Standard deviation.
Grade of F₁ parents.	-2	-1¾	-1	¾	½	¼	0	+¼	+½	+¾	1	1¼	1½	1¾	2	2¼	2½	3¼	Totals.	Means.	Standard deviation.
¾						1	1						1						3	.58
⅝		1	1		1		3					1		1	2		1		11	.57
⅛			1		1		1		1		1	2	1					1	9	.80
0				1	3	3	3		1		4		1	1	3		2		22	.72
+¼										1	1	1							3	1.00
+½	1		1								1		1						4	-.12
+1	1		1		1		1	1		1	2					1			9	.19
Totals or means	2	1	4	1	6	4	9	1	2	2	9	4	4	2	5	1	3	1	61	.58	1.17

Grade of F₁ parents.	Grade of (F₂) offspring, upper group parents.																							Totals.		Means.		Standard deviation.
Grade of F₁ parents.	-2	-1¾	-1	¾	½	¼	0	+¼	½	¾	1	1¼	1½	1¾	2	3½	4	4¼	4½	4¾	5	5¼	5½	L[1]	U[2]	L[1]	U[2]	L[1]	U[2]
4⅛							1			2								1	1	1		1	1	3	5		4.85
4¼		1																1	6	1	1	1		1	10		4.62
4⅜														1	1			2		1	1			2	4		4.56
4½					1					2	2				1	1	2	4	10	6	8	4	6	6	41		4.78
4⅝							1								1			1	1	1	2	3		2	8		4.91
Totals or means		1			1		2			4	2			1	3	1	2	9	18	10	12	9	7	14	68	+.75	4.77	1.03	.44

[1] Lower group offspring, -1¾ to +2 inclusive.

[2] Upper group offspring, +3½ to +5½ inclusive.