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if coefficient of skewness is zero then distribution is symmetric or zero skewed.
It depends on what the underlying distribution is and which coefficient you want to calculate.
A measure of skewness is Pearson's Coefficient of Skew. It is defined as: Pearson's Coefficient = 3(mean - median)/ standard deviation The coefficient is positive when the median is less than the mean and in that case the tail of the distribution is skewed to the right (notionally the positive section of a cartesian frame). When the median is more than the mean, the cofficient is negative and the tail of the distribution is skewed in the left direction i.e. it is longer on the left side than on the right.
lol...u seem to be studying in swinburne?? may be coincidence...! I was looking for the same stuff :P
coefficient