Mathematics for IGCSE & O level - Categorical, Numerical And Grouped Data (Section 6 - No. 49)
What can you say about a dataset if the mean is substantially greater than the median?
The data is skewed to the left.
The data is normally distributed.
The data is skewed to the right.
There is no skewness.
Forklaring
If the mean is greater than the median, the data is skewed to the right, because of the right tail pulling up the mean.