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.
fierce - violently agitated and turbulent; boisterous winds and waves; the fierce thunders roar me their music- Ezra Pound; rough weather; rough seas. boisterous, rough. stormy - (especially of weather) affected or characterized by storms or commotion; a stormy day; wide and stormy seas.