+--------+-----------------------+-------+------+-----------+
| Grade | Grade of offspring. | | | |
| of +--+--+--+--+--+--+--+--+Totals.|Means.|Regression.|
|parents.|2¾|3¼|3½|3¾| 4|4¼|4½|4¾| | | |
+--------+--+--+--+--+--+--+--+--+-------+------+-----------+
| 4 | | 4|17|23|19| 2| | | 65 | 3.67 | .31 |
| 4⅛ | | | 1| 8|16| 5| 1| | 31 | 3.97 | .15 |
| 4¼ | 1| | 5|10|20| 6| | 1| 43 | 3.93 | .32 |
| 4⅜ | | | 1| 5| 3| 1| | | 10 | 3.85 | .52 |
| 4½ | | | 1|14|15| 7| 3| | 40 | 3.98 | .52 |
| 4⅝ | | | | 3| 1| | 1| | 5 | 3.95 | .80 |
| +--+--+--+--+--+--+--+--+-------+------+-----------+
|Totals | | | | | | | | | | | |
| or | | | | | | | | | | | |
|means, | | | | | | | | | | | |
| 4.22| 1| 4|25|63|74|21| 5| 1| 194 | 3.88 | .34 |
+--------+--+--+--+--+--+--+--+--+-------+------+-----------+
TABLE 14.—_Summary of the results of thirteen generations of plus
selection based on Tables 1-13._
+-------------------------------------------------------------------+
|Generation.
| |No. of offspring.
| | |Mean, parents.
| | | |Mean, offspring.
| | | | |Standard deviation,
| | | | |parents.
| | | | | |Standard deviation,
| | | | | |offspring.
| | | | | | |Correlation,
| | | | | | |parents-offspring.
| | | | | | | |Absolute regression of
| | | | | | | |offspring on parents.
| | | | | | | | |Advance of
| | | | | | | | |parents.
| | | | | | | | | |Advance of
| | | | | | | | | |offspring.
+------+------+------+------+------+------+------+-----+-----+------+
| 1 | 150 | 2.51 | 2.05 | .313 | .541 | .298 | .46 | | |
| 2 | 471 | 2.52 | 1.92 | .307 | .732 | .317 | .60 | .01 | -.13 |
| 3 | 341 | 2.73 | 2.51 | .285 | .531 | .331 | .22 | .21 | .59 |
| 4 | 444 | 3.09 | 2.73 | .215 | .468 | .066 | .36 | .36 | .22 |
| 5 | 610 | 3.33 | 2.90 | .240 | .505 | .160 | .43 | .24 | .17 |
| 6 | 861 | 3.52 | 3.11 | .209 | .490 | .180 | .41 | .19 | .21 |
| 7 |1,077 | 3.56 | 3.20 | .212 | .555 | .215 | .36 | .04 | .09 |
| 8 |1,408 | 3.75 | 3.48 | .246 | .439 | .099 | .27 | .19 | .28 |
| 9 |1,322 | 3.78 | 3.54 | .112 | .346 | .210 | .24 | .03 | .06 |
| 10 | 776 | 3.88 | 3.73 | .112 | .362 | .116 | .15 | .10 | .19 |
| 11 | 697 | 3.98 | 3.78 | .113 | .289 | .233 | .20 | .10 | .05 |
| 12 | 590 | 4.09 | 3.94 | .176 | .302 | .161 | .15 | .11 | .16 |
| 13 | 194 | 4.22 | 3.88 | .433 | .270 | .132 | .34 | .13 | -.06 |
+------+------+------+------+------+------+------+-----+-----+------+
|Total |8,941 | | | | | | | | |
+------+------+------+------+------+------+------+-----+-----+------+
TABLE 15.—_Mean grade and number of offspring produced by parents of a
particular grade in each generation of the plus selection series, based
on Tables 1-13. The grade of the parents is indicated at the head of each
column. In the body of the table is recorded the grade of the offspring
(in light-faced figures) and the number of offspring (in =heavy-faced
figures=)._
+------+-----------------------------------------------------+----------+
|Generation. | |
| | Grade of parents; below, | |
| | grade and number of their | Total |
| | offspring. | number |
| +-----+-----+-----+-----+-----+-----+-----+-----+-----+ of |
| | 2 | 2⅛ | 2¼ | 2⅜ | 2½ | 2⅝ | 2¾ | 2⅞ | 3 |offspring.|
+------+-----+-----+-----+-----+-----+-----+-----+-----+-----+----------+
| 1 |1.76 | |1.87 | |2.06 |2.15 |2.12 | |2.35 | |
| | =18=| | =20=| | =37=| =5=| =51=| | =12=| =150= |
| 2 |1.70 |1.28 |1.87 |1.92 |1.80 |2.11 |1.92 |2.41 |2.47 | |
| | =46=| =56=| =8=| =45=|=133=| =44=| =52=| =23=| =59=| =471= |
| 3 | |2.06 | |2.15 |2.32 |2.63 |2.46 |2.70 |2.49 | |
| | | =21=| | =17=| =54=| =64=| =43=| =47=| =71=| =341= |
| 4 | | | | |2.55 | |2.65 |2.97 |2.60 | |
| | | | | | =11=| | =18=| =37=|=143=| =444= |
| 5 | | | | | | |3.00 |2.87 |2.81 | |
| | | | | | | | =12=| =21=| =15=| =610= |
| 6 | | | | | | | | |3.25 | |
| | | | | | | | | | =2=| =861= |
+------+-----+-----+-----+-----+-----+-----+-----+-----+-----+----------+
+------+-----------------------------------------------------+----------+
|Generation. | |
| | Grade of parents; below, | |
| | grade and number of their | Total |
| | offspring. | number |
| +-----+-----+-----+-----+-----+-----+-----+-----+-----+ of |
| | 3⅛ | 3¼ | 3⅜ | 3½ | 3⅝ | 3¾ | 3⅞ | 4 | 4⅛ |offspring.|
+------+-----+-----+-----+-----+-----+-----+-----+-----+-----+----------+
| 2 |2.50 | | | | | | | | | |
| | =5= | | | | | | | | | =471= |
| 3 |3.07 |3.17 |2.91 | | | | | | | |
| | =10=| =6=| =8=| | | | | | | =341= |
| 4 |2.69 |2.89 |2.70 |3.02 | |2.75 | | | | |
| |=122=| =64=| =23=| =20=| | =6=| | | | =444= |
| 5 |2.81 |2.81 |2.94 |2.87 |3.08 |3.07 |3.35 |3.36 |3.00 | |
| |=114=|=138=|=145=| =69=| =64=| =14=| =8=| =7=| =3= | =610= |
| 6 |2.84 |3.10 |2.96 |3.10 |3.16 |3.22 |3.26 |3.41 | | |
| | =28=|=143=|=123=|=212=|=181=| =78=| =80=| =14=| | =861= |
| 7 |2.87 |3.09 |2.97 |3.18 |3.23 |3.35 |3.49 |3.53 | | |
| | =28=|=131=|=160=|=177=|=289=|=184=| =90=| =15=| | =1,077= |
| 8 | | | |3.46 |3.50 |3.49 |3.53 |3.31 |3.72 | |
| | | | | =59=|=484=|=469=|=238=| =64=| =60=| =1,408= |
| 9 | | | |3.25 |3.43 |3.50 |3.65 |3.57 |3.57 | |
| | | | | =4=|=244=|=591=|=424=| =45=| =7=| =1,322= |
| 10 | | | | | |3.69 |3.72 |3.76 |3.87 | |
| | | | | | |=257=|=347=|=120=| =44=| =776= |
| 11 | | | | | |3.75 |3.70 |3.87 |3.81 | |
| | | | | | | =11=|=333=|=214=|=110=| =697= |
| 12 | | | | | |3.82 |3.96 |3.93 |3.91 | |
| | | | | | | =35=| =48=|=145=|=227=| =590= |
| 13 | | | | | | | |3.67 |3.97 | |
| | | | | | | | | =65=| =31=| =194= |
+------+-----+-----+-----+-----+-----+-----+-----+-----+-----+----------+
+------+-----------------------------+----------+
|Generation. | |
| | Grade of parents; below, | |
| | grade and number of their | Total |
| | offspring. | number |
| +-----+-----+-----+-----+-----+ of |
| | 4¼ | 4⅜ | 4½ | 4⅝ | 4¾ |offspring.|
+------+-----+-----+-----+-----+-----+----------+
| 7 |3.75 | | | | | |
| | =3=| | | | | =1,077= |
| 8 |3.69 |3.96 | | | | |
| | =22=| =8=| | | | =1,408= |
| 9 |3.75 |3.50 | | | | |
| | =4=| =3=| | | | =1,322= |
| 10 |3.84 | | | | | |
| | =8=| | | | | =776= |
| 11 |3.91 |3.94 | | | | |
| | =25=| =4=| | | | =697= |
| 12 |3.94 |4.12 |4.14 |3.90 |4.75 | |
| | =71=| =45=| =7=| =11=| =1=| =590= |
| 13 |3.93 |3.85 |3.98 | |3.95 | |
| | =43=| =10=| =40=| | =5=| =194= |
| | | | | | +----------+
| | | | | | | =8,941= |
+------+-----+-----+-----+-----+-----+----------+
TABLE 16.—_Classification of the offspring in generation 1 of the minus
selection series._
+--------+-----------------------------+-------+------+-----------+
| Grade | Grade of offspring. | | | |
| of +--+--+--+--+--+--+--+--+--+--+Totals.|Means.|Regression.|
|parents.|+¼| 0| ¼| ½| ¾| 1|1¼|1½|1¾| 2| | | |
+--------+--+--+--+--+--+--+--+--+--+--+-------+------+-----------+
| -1¼ | 1| | | | | 2| | 3| 2| | 8 | 1.34 | -.09 |
| 1⅜ | 1| 1| 3| |12| 8| 3| 1| 1| 1| 31 | .86 | .51 |
| 1½ | | | | | 1| 1| 1| 1| 1| 1| 6 | 1.37 | .13 |
| 1⅞ | | | 1| 1| 2| 2| | 3| 1| | 10 | 1.05 | .82 |
| +--+--+--+--+--+--+--+--+--+--+-------+------+-----------+
|Totals | | | | | | | | | | | | | |
| or | | | | | | | | | | | | | |
|means, | | | | | | | | | | | | | |
| 1.46| 2| 1| 4| 1|15|13| 4| 8| 5| 2| 55 | 1.00 | .46 |
+--------+--+--+--+--+--+--+--+--+--+--+-------+------+-----------+