. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. VARIABILITY IN EGG WEIGHT 11 Number of families 670 Dam's mean March variability in egg weight, grams . . Standard deviation of dams' March variability +.81 Mean March variability in egg weight of families, Standard deviation of March variability of families .... +.71 Coefificient of correlation .0617+ .0260 The variability in egg weight was essentially the same for the dams and their families of daughters. The standard deviation was slightly lower for families than for dams, as might be
. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. VARIABILITY IN EGG WEIGHT 11 Number of families 670 Dam's mean March variability in egg weight, grams . . Standard deviation of dams' March variability +.81 Mean March variability in egg weight of families, Standard deviation of March variability of families .... +.71 Coefificient of correlation .0617+ .0260 The variability in egg weight was essentially the same for the dams and their families of daughters. The standard deviation was slightly lower for families than for dams, as might be expected. The regression was linear, but the small value of the coefificient of correlation fails to suggest inherited variability in egg weight between mothers and daughters. Variability in Egg VVeight of Daughters from Dams of Different Classes with Respect to March Variability in Egg Weight If variability in egg weight during the month of March is inherited, there should be parallelism between the dams and daughters with respect to this variability. In table 3 the dams are classified with respect to March standard deviation in egg weight, and opposite each class of dams is placed the mean family standard deviation of daughters from the diflferent classes. Figure 3 presents the data graphically. m 5 FAMILIES OF DAUGHTERS Figure 3. March Variability in Egg Weigiit of Dams and Their Families (119;. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Massachusetts Agricultural Experiment Station. Amherst, : Massachusetts Agricultural Experiment Station, 1907-1974
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