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: backlash. 1. Mech. a The reaction or tendency to jar or recoil, as machinery subjected to sudden strain, b The amount of loose play in a part subject to such tendency or reaction. 2. In angling, a snarl or tangle of the line on a reel, as caused by a faulty cast.