+--------+---------------------------------------+-----------------------+
| Grade | Grade of offspring. |Totals. |
| of +--+--+--+--+---+---+---+---+--+--+--+--+ Means. |
|parents.|1¾| 2|2¼|2½| 2¾| 3 | 3¼| 3½|3¾| 4|4¼|4½| Regression.|
+--------+--+--+--+--+---+---+---+---+--+--+--+--+------+------+---------+
| 3¼ | | | | | | 2| | 2| | | | | 4 | 3.25 | 0 |
| 3⅜ | | | | | | | | | | | | | | | |
| 3½ | | | | 1| 4| 6| 9| 18| 17| 2| 2| | 59 | 3.46 | .04 |
| 3⅝ | 1| 2| 9|13|30| 69| 44|144|149|22| 1| | 484 | 3.50 | .12 |
| 3¾ | | 2| 1| 9|12| 55| 39|152|173|23| 2| | 469 | 3.49 | .26 |
| 3⅞ | | 1| 2| | 4| 23| 18| 98| 69|19| 2| 1| 238 | 3.53 | .34 |
| 4 | | | 1| 2| 3| 10| 6| 34| 6| 1| 1| | 64 | 3.31 | .69 |
| 4⅛ | | | | | 2| 5| 2| 14| 13|14|10| | 60 | 3.72 | .40 |
| 4¼ | | | | | | | 1| 7| 11| 2| 1| | 22 | 3.69 | .56 |
| 4⅜ | | | | | | | | | 2| 5| 1| | 8 | 3.96 | .41 |
| +--+--+--+--+--+---+---+---+---+--+--+--+------+------+---------+
|Totals | | | | | | | | | | | | | | | |
| or | | | | | | | | | | | | | | | |
|means, | | | | | | | | | | | | | | | |
| 3.75| 1| 5|13|25|55|170|119|469|440|88|20| 1| 1408 | 3.48 | .27 |
+--------+--+--+--+--+--+---+---+---+---+--+--+--+------+------+---------+