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Hereditary Genius
379
the 2d, and .024924 to 1 against its falling into the 3d; then the chance
against its falling between the mean and the third grade, inclusive, is
clearly the sum of these 3 numbers, or .075273, which is the entry in
Column N, opposite the grade 3.
TABLE BY QUETELET.
M
N
M
N
Grade or Rank
of the Group.
Probability of
Drawing each Group.
Sum of the Probabilities,
commencing; at the most
probable Group.
Number of
the Grade.
Probability of
Drawing each
Group.
Sum of the Probabilities,
commencing at the most
probable Group.
1
.025225
.025225
41
.0009458
.495278
2
.025124
.050349
42
.0008024
.496081
3
.024924
.075273
43
.0006781
.496759
4
.024627
.099900
44
.0005707
.497329
5
.024236
.124136
45
.0004784
.497808
6
.023756
.147892
46
.0003994
.498207
7
.023193
.171085
47
.0003321
.498539
8
.022552
.193637
48
.0002750
.498814
9
.021842
.215479
49
.0002268
.499041
10
.021069
.236548
50
.0001863
.499227
11
.020243
.256791
51
.0001525
.499380
12
.019372
.276163
52
.0001243
.499504
13
.018464
.294627
53
.0001008
.499605
14
.017528
.312155
54
.0000815
.499686
15
.016573
.338728
55
.0000656
.499752
16
.015608
.344335
56
.0000526
.499804
17
.014640
.358975
57
.0000421
.499847
18
.013677
.372652
58
.0000334
.499880
19
.012726
.385378
59
.0000265
.499906
20
.011794
.397172
60
.0000209
.499927
21
.010887
.408060
61
.0000164
.499944
22
.019998
.418070
62
.0000128
.499957
23
.009106
.427236
63
.0000100
.499967
24
.008360
.435595
64
.0000077
.499974
25
.007594
.443189
65
.0000000
.499980
26
.006871
.450060
66
.0000046
.499985
27
.006191
.456251
67
.0000035
.499988
28
.005557
.461809
68
.0000027
.4999912
29
.004968
.466776
69
.0000021
.4999933
30
.004423
.471199
70
.0000016
.4993948
31
.003922
.475122
71
.0000012
.4999960
32
.003464
.478586
72
.0000009
.4999969
33
.003047
.481633
73
.0000007
.4999976
34
.002670
.484304
74
.0000005
.4999981
35
.002330
.486634
75
.0000004
.4999984
36
.002025
.488659
76
.0000003
.4999987
37
.001753
.490412
77
.0000002
.4999989
38
.001512
.491924
78
.00000014
.4999990
39
.001208
.493222
79
.00000011
.4999991
40
.001110
.494332
80
.00000004
.4999991
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