Measures of asymmetry (skewness) and kurtosis characterize the shape of the distribution of the population elements sampled around the mean (Maroco, 2014).
3.4.3.1 Measures of Skewness
Measures of skewness describe the shape of a frequency distribution curve. For a symmetrical curve or frequency distribution, the mean, the mode, and the median are the same. For an asymmetrical curve, the mean gets farther away from the mode, and the median is located in an intermediary position. Fig. 3.16 shows a symmetrical distribution.
Fig. 3.16 Symmetrical distribution.
On the other hand, if the frequency distribution is more concentrated ...
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