Value | Frequency |
---|---|
1 | $a$ |
2 | 2$a$ |
3 | 3$a$ |
4 | 2$a$ |
5 | $a$ |
The frequency distribution above summarizes a set of data, where $a$ is a positive integer. How much greater is the mean of the set of data than the median?
Difficulty: Hard
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Value | Frequency |
---|---|
1 | $a$ |
2 | 2$a$ |
3 | 3$a$ |
4 | 2$a$ |
5 | $a$ |