Note 190 — Chapter XX
Reading edition
Beeton, Mary, and Karl Pearson, Biometrika I, p. 60. The actual correlation varies with the age and sex: the following are the results:
Elder adult brother and younger adult brother.2290 ± .0194
Adult brother and adult brother.2853 ± .0196
Minor brother and minor brother.1026 ± .0294
Adult brother and minor brother-.0262 ± .0246
Elder adult sister and younger adult sister.3464 ± .0183
Adult sister and adult sister.3322 ± .0185
Minor sister and minor sister.1748 ± .0307
Adult sister and minor sister-.0260 ± .0291
Adult brother and adult sister.2319 ± .0145
Minor brother and minor sister.1435 ± .0251
Adult brother and minor sister-.0062 ± .0349
Adult sister and minor brother-.0274 ± .0238