- Dante 285
- Deflection causes of 57 from aim 38
- De Morgan 83, 106, 119, 122, 135, 177, 179, 197, 236, 247, 296, 308, 350, 379, 382, 483
- De Ros trial 255
- Digits, random 111, 114
- Discontinuity 116
- Distribution, random 106
- Diagrams 29, 45, 118, 443, 476, 481, 493, 501
- Dialectic 302, 320
- Donkin 123, 188, 283
- Duration of life 15, 441
- Düsing 259
- Ebbinghaus 199
- Edgeworth, F. Y. 34, 119, 256, 339, 393, 435, 483
- Ellis, L. 9
- Epidemics 62
- Error, law of 29 asymmetrical 34, 441, 443 binomial 37, 457, 469, 480 geometrical 34, 502 heterogeneous 45 production of 36
- Error mean 446 probable 446, 472, 488 of mean square 447, 488
- Escapes, narrow 341
- Expectation, moral 388
- Experience and probability 74
- Exponential curve 29
- Extraordinary sense of 159, 423 stories 407, 421