A New Approach to Determine the Coefficient of Skewness and An Alternative Form of Boxplot

Abstract: To solve the problems in measuring coefficient of skewness related to extreme value, irregular distance from the middle point and distance between two consecutive numbers, "Rank skewness" a new measure of the coefficient of skewness has been proposed in this paper. Comparing with other measures of the coefficient of skewness, proposed measure of the coefficient of skewness performs better specially for skewed distribution. An alternative of five point summary boxplot, a four point summary graph has also been proposed which is simpler than the traditional boxplot. It is based on all observation and give better result than the five point summary.