Pearson’s measure of skewness –
Correct Answer: Mean - Mode/SD
Description: Step 1: Subtract the median from the mean: 70.5 – 80 = -9.5.
Step 2: Divide by the standard deviation: -28.5 / 19.33 = -1.47. Caution: Pearson's first coefficient of skewness uses the mode.
Therefore, if the mode is made up of too few pieces of data it won't be a stable measure of central tendency.
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