An Introduction to the theory of statistics

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Monograph

Identifikator:: 1751730271

URN:: urn:nbn:de:zbw-retromon-127610

Document type:: Monograph

Author:: Yule, George Udny http://d-nb.info/gnd/12910504X

Title:: An Introduction to the theory of statistics

Edition:: 8. ed. rev

Place of publication:: London

Publisher:: Griffin

Year of publication:: 1927

Scope:: XV, 422 S; Ill., Diagr

Digitisation:: 2021

Collection:: Economics Books

Usage license:: Get license information via the feedback formular.

Chapter

Document type:: Monograph

Structure type:: Chapter

Title:: Part II. The theory of variables

Collection:: Economics Books

VI.—THE FREQUENCY-DISTRIBUTION. TABLE IX. —Showing the Frequency-distribution of Weights for Adult Males born in England, Ireland, Scotland, and Wales. (Loc. cit., Table V1.) Weights were taken to the nearest pound, consequently the true Class- Intervals are 89°5-99°5, 99:5-109°5, etc. (§ 9). Number of Men within given Limits of : Weight. Place of Birth— Weight Total, in lbs. England. Scotland. Wales. Ireland. 90- 2 -- rn — 2 100- 26 2 gH 34 110- ! 133 ) 10 1 152 120- 338 | 22 23 i 390 130- 694 63 68 42 867 140- 1240 173 153 {7 1623 150- 1075 255 178 Li 1559 160- 881 275 134 HN 1326 170- 492 168 102 £3 787 180- 304 125 oF I 476 190- 174 F J 263 200- i ? 107 210- { : 85 220- ‘ 41 230- 3 135 240- 11 250- 260- 270- 280- - Total ~~ 5..2 1.12 ; 7:49 of classification in this case: the class-interval chosen throughout the middle of the range is 1/15th, but the last interval is “29/30-1.” This is not a whole interval, but it is more than a half, for all the cases of complete fecundity are reckoned into the class. In the diagram (fig. 12) it has been reckoned as a whole class, and this gives a smooth distribution. To take an illustration from meteorology, the distribution of barometer heights at any one station over a period of time is, in general, asymmetrical, the most frequent heights lying towards the upper end of the range for stations in England and Wales. Table XI. and fig. 13 show the distribution for daily observations at Southampton during the years 1878-90 inclusive. The distributions of Tables VIIL.-XI. all follow more or less the type of fig. 9 (a), the frequency tailing off, at the steeper end of 95 vy 136

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