Pearson’s Skewness Coefficient is given by
• Measures of skewness:
– Pearson’s mode or First Skewness coefficient = (Mean – Mode)/SD
– Pearson’s median or Second Skewness coefficient = 3(Mean – Median)/SD
– Quartile skewness = (Q3 – 2Q2 + Q1)/Q3 – Q1
Mean-Mode/SD
Mode-Mean/SD
SD/Mean-Median
SD/Median-Mean