In statistics, the coefficient of determination R2 is the proportion of variability in a data set that is accounted for by a statistical model. In this definition, the term variability is defined as the sum of squares. There are equivalent expressions for R2 based on an analysis of variance decomposition.
On average, an ostrich egg weighs about 1.4 Kg (3.1 pounds). On average, an ostrich egg weighs about 1.4 Kg (3.1 pounds).
The unfertilized ostrich egg is the largest known cell. Its volume is equal to ~25 hen eggs. Table gives weight and volume in cubic inches of birds listed in key words. The ostrich egg volume was taken according to most conservative formula, after subtraction of 15% (see measurement method).