Statistical methodsJ. Wiley, 1914 - 223 pages |
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Page 108 - XI, contains the mantissas of logarithms, carried to six places of decimals, for numbers between 1 and 9999, inclusive. The first three figures of a number are given in the first column, the fourth at the top of the other columns. The first two figures of the mantissa are given only in the second column, but these are understood to apply to the remaining four figures in either column following, which are comprised between the same horizontal lines with the two.
Page 109 - Finally, place the decimal point according to the rule for characteristics, prefixing or annexing ciphers if necessary. The division required is facilitated by the table of proportional parts, which furnishes by inspection the figures of the quotient. Example. — Find the number of which the logarithm is 8.263927 8.263927 First 4 figures 1836 from 263873 Diff.
Page 109 - For 2342 mantissa is 369587 . " diff. 185 col. 7 129.5 " " " " 5 9.2 Ans. For 23.4275 log is 1.369726 The decimals of the corrections are added together to determine the nearest value of the sixth figure of the mantissa. To find the number corresponding to a given logarithm. — If the given mantissa is not in the table find the one next less, and take out the four figures corresponding to it; divide the difference between the two mantissas by the...
Page 110 - ... logarithms between which the given logarithm would fall, and adopt that one which corresponds to the least number of minutes; which minutes take out with the degrees, and divide...
Page 91 - A Quantitative Study of the Effect of Environment upon the Forms of Nassa obsoleta and Nassa trivittata from Cold Spring Harbor, Long Island.
Page 16 - The resulting a- is termed by Pearson the " standard deviation." It is a concrete number, being expressed in the same units as the measurement of the individuals measured. In the case of human stature it is expressed in centimeters. To make use of this method of estimating the variability of stature of the Jews, the magnitudes obtained by measurement were arranged in a series of classes, each class...
Page 90 - DAVENPORT, CB Comparison of Pecten opercularis from Three Localities of the British Isles.
Page 107 - The use of this table can be extended by using the principle that, if any number be multiplied by n, its square is multiplied by n2, its cube by n3 and its reciprocal by...
Page 111 - The above rules do not apply to the first two pages of this table (except for the column headed cosine at top) because here the differences vary so rapidly that interpolation made by them m the usual way will not give exact results. On the first two pages, the first column contains the number of seconds for every minute from I'to2°; the mmutes are given m the second, the log.
Page 86 - A Statistical Study of the Variations in the Formation and Position of the Lumbosacral Plexus in Man (01) III 468.