Consider the following data set: 3, 4, 6, 7, 9, 9, 11.
Identify a number you could add to the set to keep the mean equal to the median.

Please help me out. I have no idea how to find this and my lesson doesn't explain how to do it either. I already know that the mean and median for the set given is 7.

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  1. Try adding one.

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