What is the mean of a data if its Pearson's coefficient of skewness is 0.25, standard deviation is 6 and mode is 18?
19.5
Using Pearson's coefficient of skewness formula: Skewness = (3 * (Mean - Mode)) / Standard deviation. Rearranging the formula for Mean: Mean = Mode + (Skewness * Standard deviation) / 3 Mean = 18 + (0.25 * 6) / 3 = 18 + 1.5 = 19.5. Therefore, option 4, "19.5," is the correct answer.
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