In statistical theory, covariance is a measure of how much two random variables change together. In other words, covariance is a measure of the strength of the correlation between two random variables. Also, it can be considered as a generalization of the concept of variance of two random variables.
Facts & Figures. Lake Baikal is the largest freshwater lake by volume (23,600km3), containing 20% of the world's fresh water. At 1,637m, it is the deepest freshwater lake in the world; the average depth is 758m. It is 636km long and 81km wide; the surface area is 31,494km2. The lake is estimated to be 25 million years old, making it one of the most ancient lakes in geological history.
Best Answer: Lake Victoria is the largest lake in Africa and the is the world's second-largest freshwater lake-covering an area of 69,490 sq km (26,830 sq mi) and lies 1,130 m (3,720 ft) above sea level. Its greatest known depth is 82 m (270 ft). Lake Tanganyika is the deepest lake in Africa reaching at its greatest depth is 1,436 m (4,710 ft), making it the second deepest freshwater lake in the world after Lake Baikal. World's Largest Lake (by volume): The salty Caspian Sea is the world's largest land-locked body of water. It contains approximately 18,900 cubic miles of water (78,700 cubic kilometers). Lake Baikal is the world's largest freshwater lake in terms of volume. It contains about 5521 cubic miles of water (23,000 cubic kilometers), or approximately 20% of Earth's fresh surface water.