Natural inheritanceMacmillan and Company, 1889 - Всего страниц: 259 |
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... with refers to the curious regularity commonly observed in the statistical peculiarities of great populations during a long series of B generations . The large do not always beget the large CONTENTS CHAPTER PAGE INTRODUCTORY.
... with refers to the curious regularity commonly observed in the statistical peculiarities of great populations during a long series of B generations . The large do not always beget the large CONTENTS CHAPTER PAGE INTRODUCTORY.
... statistical way , is , how much less ? The last of the problems that I need mention now , concerns the nearness of kinship in different degrees . We are all agreed that a brother is nearer akin than a nephew , and a nephew than a cousin ...
... statistical methods that are based upon them , in expressing the conditions under which heredity acts : I may here point out that , as the processes of statis- tics are themselves processes of intimate blendings , their results are the ...
Стр. 44
... statistical purposes . The only recognisable differences between the Schemes will be , that , if the number of observations in the sample is very large , the upper margin of the Scheme will fall into a more regular curve , especially ...
... statistical purposes . The only recognisable differences between the Schemes will be , that , if the number of observations in the sample is very large , the upper margin of the Scheme will fall into a more regular curve , especially ...
Стр. 59
... statistical statements tend to be so cum- brous that every abbreviation is welcome . The stage to which we have now arrived is this . It has been shown that the distribution of very different human qualities and faculties is ...
... statistical statements tend to be so cum- brous that every abbreviation is welcome . The stage to which we have now arrived is this . It has been shown that the distribution of very different human qualities and faculties is ...
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Alphonse de Candolle amount ancestor ancestry Anthropometric Apoplexy appear approximately arithmetic series Artistic Faculty average blend brothers calculated cent child Co-Fraternity columns consumptive corresponding Curve of Frequency dark Deviation disease distribution elements ellipses entries equal Eye-colour Family Faculties Father favour female Filial four Francis Galton Frequency of Error Geometric Mean given Grade grandparents hazel hazel-eyed height hereditary heredity heritage illustration individual influence inheritance inquiry Jules Gouffé large number Law of Error law of Frequency less light light-eyed male marriage selection mean measure mediocre method Mid-Parent Mid-Parental mother Natural Selection Non-Artistic Normal Scheme North Finchley observed pair Pangenesis parents peculiarity population position Prob Probable Error proportion R.F.F. data rank reckoned Record of Family respect scale Scheme seeds Senile Gangrene shot shown stability statistical Stature successive suppose Table 11 tendency tion transmitted trustworthy value of Q variability variety
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Стр. 94 - However paradoxical it may appear at first sight, it is theoretically a necessary fact, and one that is clearly confirmed by observation, that the stature of the adult offspring must on the whole be more mediocre than the stature of their parents — that is to say, more near to the median stature of the general population.
Стр. 193 - Each peculiarity in a man is shared by his kinsmen, but on the average in a less degree. It is reduced to a definite fraction of its amount, quite independently of what its amount might be. The fraction differs in different orders of kinship, becoming smaller as they are more remote
Стр. 105 - Mid-Parent, and still fewer would differ as widely as the more exceptional of the two Parents. The more bountifully the Parent is gifted by nature, the more rare will be his good fortune if he begets a son who is as richly endowed as himself, and still more so if he has a son who is endowed yet more largely.
Стр. 10 - We appear, then, to be severally built up out of a host of minute particles of whose nature we know nothing, any one of which may be derived from any one progenitor, but which are usually transmitted in aggregates, considerable groups being derived from the same progenitor. It would seem that while the embryo is developing itself, the particles more or less qualified for each new post wait as it were in competition, to obtain it. Also that the particle that succeeds, must owe its success partly to...
Стр. 101 - I may be permitted to say that I never felt such a glow of loyalty and respect towards the sovereignty and magnificent sway of mathematical analysis as when his answer reached me, confirming, by purely mathematical reasoning, my various and laborious statistical conclusions with far more minuteness than I had dared to hope; for the original data ran somewhat roughly, and I had to smooth them with tender...
Стр. 65 - The law would have been personified by the Greeks and deified, if they had known of it. It reigns with serenity and in complete self-effacement amidst the wildest confusion. The huger the mob, and the greater the apparent anarchy, the more perfect is its sway. It is the supreme law of Unreason. Whenever a large sample of chaotic elements are taken in hand and marshalled in the order of their magnitude, an unsuspected and most beautiful form of regularity proves to have been latent all along.
Стр. 134 - Hence the influence, pure and simple, of the mid-parent may be taken as ^, of the midgrandparent £, of the mid-great-grandparent ^, and so on.
Стр. 196 - If one of the couples consist of two gifted members of a poor stock, and the other of two ordinary members of a gifted stock, the difference between them will betray itself in their offspring. The children of the former will tend to regress ; those of the latter will not.
Стр. 238 - Fechner's law, in its approximative and simplest form of sensation = log stimulus, tells us that a series of tints, in which the quantities of white scattered on a black ground are as 1, 2, 4, 8, 16, 32, &c., will appear to the eye to be separated by equal intervals of tint. Therefore, in matching a grey that contains 8 portions of white, we are just as likely to err by selecting one that has 16 portions as one that has 4 portions.