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.
INTRODUCTION. Lake Victoria, East Africa, is the largest tropical freshwater lake in the world. It is relatively shallow (maximum depth is 87m) with a surface area of 68,000km2. Its waters are shared by the nations of Tanzania, Uganda, and Kenya, with much of Burundi and Rwanda lying within the watershed.ake Victoria is home and livelihood to millions of Africans in the countries of Kenya, Tanzania, and Uganda. It is the largest freshwater tropical lake in the world, and source of the worldâs largest freshwater fishery.