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