The average and measure of
dispersion can describe the distribution but they are not sufficient to
describe the nature of the distribution. For this purpose we use other concepts
known as Skewness and Kurtosis. The symmetrical and skewed distributions are shown by curves as
Skewness
Skewness means lack of
symmetry. A distribution is said to be symmetrical when the values are
uniformly distributed around the mean. For example, the following distribution
is...