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 largest living bird, as of 2014, is the ostrich. An ostrich reaches a maximum height of about 9 feet and can weigh over 300 pounds. Its eggs are 6 inches wide and weigh up to 3 pounds.