Population variance is a type of the measure of spread that is often come into consideration in statistics whenever the population data is used. It is referred to the estimation how far the values of a population spread or disperse around the mean position.
Definition of scowl. intransitive verb. 1 : to contract the brow in an expression of displeasure. 2 : to exhibit a threatening aspect. transitive verb.
Definition of Endure. put up with something or somebody unpleasant; I cannot bear his constant criticism; The new secretary had to endure a lot of unprofessional remarks; he learned to tolerate the heat; She stuck out two years in a miserable marriage.