+--------+------------------------------------------+--------------------+
| Grade | Grade of offspring. |Totals. |
| of +--+--+--+--+--+---+---+---+---+--+--+--+--+ Means. |
|parents.|1½|1¾| 2|2¼|2½| 2¾| 3 | 3¼| 3½|3¾| 4|4¼|4½| Regression.|
+--------+--+--+--+--+--+---+---+---+---+--+--+--+--+-----+------+-------+
| 3 | | | | | | 1| | | | 1| | | | 2 | | |
| 3⅛ | | 3| 4| 1| 1| 4| 7| 5| 3| | | | | 28 | 2.84 | .28 |
| 3¼ | 1| | 3| 3| 8| 26| 31| 31| 24|15| 1| | | 143 | 3.10 | .15 |
| 3⅜ | 1| | 5| 6|13| 20| 28| 30| 14| 5| | | | 123 | 2.96 | .41 |
| 3½ | | 1| 9| 4|15| 29| 49| 41| 43|17| 4| | | 212 | 3.10 | .40 |
| 3⅝ | | | 4| 8|11| 24| 34| 36| 37|21| 5| | 1| 181 | 3.16 | .46 |
| 3¾ | 1| 1| 2| 1| 3| 4| 18| 13| 20|13| 2| | | 78 | 3.22 | .53 |
| 3⅞ | | | 4| 1| 3| 5| 14| 15| 20|14| 4| | | 80 | 3.26 | .61 |
| 4 | | | 1| | | | 2| 1| 5| 4| 1| | | 14 | 3.41 | .59 |
| +--+--+--+--+--+---+---+---+---+--+--+--+--+-----+------+-------+
|Totals | | | | | | | | | | | | | | | | |
| or | | | | | | | | | | | | | | | | |
|means, | | | | | | | | | | | | | | | | |
| 3.52| 3| 5|32|24|54|113|183|172|166|90|17| | 1| 861 | 3.11 | .41 |
+--------+--+--+--+--+--+---+---+---+---+--+--+--+--+-----+------+-------+