INDEX. 4173
63, 66-68; mnon-isotropy of con- | tion tables, 380-383 ; aggregate of
tingency table, for father and son, tables, 383-384; experimental
70-71. illustrations, 384-387; P-table
for use with association tables,
FALRNER, R. P., refs., translation of 388-389; refs., 315, 391, 394;
Meitzen’s Theorie der Statistik, 6. tables for, 358.
Fallacies, in interpreting associations ~~ Fluctuation, measure of dispersion,
—theorem on, 48-49, illustrations, 144.
49-51 ; owing to changes of classi- Flux, A. W., refs., measurement of
fication, actual or virtual, 72; in price-changes, 390.
interpreting correlations—‘“ spuri- ~~ Forcher, H., refs., Die statistische
ous ”’ correlation between indices, Methode als selbstindige Wissen-215-216;
 correlation due to schaft, 397.
heterogeneity of material, 218- Fountain, H., ref., index-numbers of
219 ; difference of sign of total prices, 131.
and partial correlations, 251-252. Frequency of a class, 10, 76.
Fay, E. A., data cited from Mar- Frequency-curve, def., 87; ideal
riages of the Deaf in America, 104. forms of, 87-105; normal curve
Fechner, G. T., refs., frequency-dis- (g.v.), 301-313; refs, 105, 314,
tributions, averages, measures of 393-394.
dispersion, ete., 129, 154; Kol- Frequency-distributions, 76 ; formalektivmasslehre,
 129, 314, 361. tion of, 79-83 ; graphic represen-Fecundity
 of brood-mares, table, 96 ; tation of, 83-87; ideal forms—
diagram, 94 ; mean, median, and symmetrical, 87-90, moderately
mode, (qu. 3) 131; inheritance asymmetrical, 90-98, extremely
(ref.), 208, 226. asymmetrical (J-shaped), 98-102,
Feeding trials, errors in, refs., 396. 363-364, U-shaped, 102-105; bi-Fertility
 of mother and daughter, nomial series, 291-300; hypercorrelation,
 161, 195-196; dia- geometrical series (ref.), 289 ; norgram,
 175 ; constants, (qu. 3) 189; mal curve, 301-313; theoretical
ref., 208, 226. forms, refs., 289, 314, 393-394;
Field trials, errors in, ref., 396. testing goodness of fit, 373-376.
Filon, L. N. G., ref., probable errors, See Binomial series; Normal
354. curve ; Correlation, normal.
Fisher, A., refs., Mathematical Theory — illustrations : of death-rates in
of Probabilities, 397. England and Wales, 77; of ages
Fisher, Irving, refs., index-numbers, at death of certain women, 78 ; of
390. stigmatic rays on poppies, 78; of
Fisher, R. A., use of term ‘* variance,” annual values of dwelling-houses
144 ; testing goodness of fit, 378, in Great Britain, 83; of head-387
 ; refs., goodness of fit in con- breadths of Cambridge students,
tingency tables, 394 ; of regression 84 ; of statures of males in the
lines, 391; errors of sampling in U.K, 88, 90; of pauperism in
correlation-coefficient, 354, 394 ; different districts of England and
probable errors, 395: Statistical Wales, 93 ; of weights of males in
Methods for Research Workers, 397. the UK. 95; of fecundity of
Fit of a theoretical to an actual brood-mares, 96; of barometer
frequency - distribution, testing, heights at Southampton, 96; of
generally, 370-389; comparison ages at death from diphtheria, 98 ;
frequencies given a priori, 370— of annual values of estates, 100;
378 ; cautions, 373-376; experi- of petals in Ranunculus bulbosus,
mental illustration, 377-378 ; com- 102; of degrees of cloudiness at
parison frequencies based on the Breslau, 103; of percentages of
observations, 378-389; contin- deaf-mutes in offspring of deafgency
 tables, 378-380; associa- mutes, 104 ; sizes of genera (Chryso-ES