VII.J DISCUSSION OF THE DATA OF STATURE. 133
TABLE OF DATA roa CALCULATING TABLES OF DISTRIBUTION OF STATURE AMONG THE KINSMEN OF PERSONS WHOSE STATURE IS KNOWN.
|
From group of person of the same Stature,
to their Kinsmen in various near degrees. |
Mean
regression=w. |
f
= p X ;V (1 - w2). |
|
Mid-parents to Sons |
2/3 |
1.27 |
|
Brothers to Brothers |
2/3 |
1-27 |
|
Fathers or Sons to
Sons or Fathers |
1/3 |
1.60 |
|
Uncles or Nephews to
Nephews or Uncles " "' |
2/9 |
1-66
Practically |
|
Grandsons to Grandparents... |
1/9 |
that of Popu |
|
Cousins to Cousins |
2/27 |
lation, or |
|
"""""" |
|
1.7 inch. |
On the other hand, if the Kinsmen were on the average no more like the Man than if they had been a group picked at random out of the general Population, then the Regression to P would be complete. The M of the Kinsmen, which is expressed by P + w(f D), would in that case become P, whatever might have been the value of D ; therefore w must= 0. We see by the preceding Table that as a general rule, Fathers or Sons should be held to be only one-half as near in blood as Brothers, and Uncles and Nephews to be one-third as near in blood as Brothers. Cousins are 42 times as remote as Fathers or as Sons, and 9 times as remote as Brothers. I do not extend the table further, because considerations would have to be taken into account that will be discussed in the next Section.
The remarks made in a previous chapter about
