"Measures of skewness indicates the tendency of the group to depart from symmetry." - Connor
The measures of central tendency and dispersion give us partial information of the central tendency and dispersion of observations around the central tendency measure of raw data. But we cannot get its complete information. To get more information about this, the population is represented by frequency curve. Thus, the direction, shape and form of the frequency curve can be studied from the frequency curve of the frequency distribution.
In this course we will study the third important measure called skewness to obtain more information about the population. It includes the meaning and types of skewness, concept of absolute and relative measures of skewness, methods of obtaining measures of skewness and coefficients of skewness (Karl Pearson's method and Bowley's method), and the comparison of two methods of coefficient of skewness.