153060
4590120
75150180
105210240
135270300
165330360
195390420

Fifteen and its multiples, as given above, are arranged in one division of the tables, thirty and sixty each in its own separate division. The line at the bottom of the tables marked Σ gives the frequency of occurrence of these three groups of numbers for all the subjects and for each interval and filling.

As is shown by the percentage of frequency columns of the tables, in no instance do the multiples of 15 constitute less than 19.52% of the male judgments and 23.81% of the female judgments. The lowest frequency for any of the four intervals is 20.32% of the total number of judgments. The maximum frequency for the males (43.03%) and for the females (56.57%) is for the interval idleness 108 seconds. That the male and female maxima should fall on the same interval is interesting.

TABLE 5

FREQUENCY OF OCCURRENCE OF 15, 30, 60, AND THEIR MULTIPLES

Males
153060Σ%Average
I48505321.12
E42905120.32
18˝R43805120.3220.32
W45404919.52
I296079638.25
E174156325.20
36˝R224166927.4129.57
W362856927.41
I2918469337.05
E257346626.29
72˝R2826338734.6634.70
W28423210240.80
I25315210843.03
E1623205923.51
108˝R2230399136.2536.16
W25374310541.83
Σ 4804103221212
% 11.9610.218.0230.12

TABLE 6

FREQUENCY OF OCCURRENCE OF 15, 30, 60, AND THEIR MULTIPLES

Females
153060Σ%Average
I583008832.47
E303587326.64
18˝R562638531.0228.48
W412406523.81
I31553912545.62
E2136177427.21
36˝R31633312746.3538.86
W4145139936.26
I29286011742.70
E1718528731.75
72˝R26375211541.9741.60
W30515613750.00
I12459815556.57
E21275810638.83
108˝R23368414352.1947.83
W24316411943.75
Σ 4915876371715
% 11.2213.4214.5639.22