Comparative Study of Various Measures of Dispersion

摘要: Statistical is a subject of mathematics, computers, management, business etc. Central tendency and measures dispersion are two major aspects statistical methods. Measures the formula to measure spread data about an average basically variation items. Dispersion refer among different  values series if all value equal then there no but wide present at peak, in other case around difference between various widely scattered peak. A good Measure must be easy understand, calculate, well defined. capable algebraic treatment. There types like range, mean deviation, standard deviation. Range simplest method dispersion. it largest smallest variable series, range rigidly Mean deviation arithmetic deviations series; amount scatter items distribution from either or median. Standard square root squares deviations.