Answer:
a. Measure of skewness
Explanation:
Skewness is a measure of the asymmetry of a probability distribution. It quantifies the extent to which a dataset's values deviate from a symmetric distribution. Various measures of skewness exist, including the Pearson's skewness coefficient, the Bowley skewness coefficient, and the moment coefficient of skewness. These measures provide a numerical indication of the skewness present in the dataset.