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 Ostrich is the largest living species of bird in the world, typically weighing 140 â 290 lbs (63.5-131.5 kg) and measuring 6 â 9 ft (1.8-2.7 meters) in height. Ostriches can run at maximum speeds of about 97.5 km/h (60.6 mph), making it both the fastest bird on land and the fastest two-legged animal in the world.