How does skewness affect the mean and median of a dataset?

  • In a positively skewed distribution, the mean is greater than the median
  • In a positively skewed distribution, the median is greater than the mean
  • Skewness affects only the mean
  • Skewness does not affect the mean and median
In a positively skewed distribution, the mean is greater than the median as the mean gets pulled in the direction of the skew (towards the right tail). In a negatively skewed distribution, the mean is less than the median as the mean gets pulled towards the left tail.
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