Mathematics for IGCSE & O level - Categorical, Numerical And Grouped Data (Section 7 - No. 20)
If the median of a dataset is 20, which of the following statements must be true?
The mean is 20.
At least half the values are equal to 20.
At least half the values are less than or equal to 20.
The range of the data is 20.
Explanation
The median divides the data set in half, with at least half the values at or below it.
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