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Question
Find the mean of the following set of numbers:
6, 9, 11, 12 and 7
Solution
`barx = (x_1 + x_2 + ...... + x_n)/n`
Here, n = 5,
∴ `barx = (6 + 9 + 11 + 12 + 7)/5`
= `45/5`
= 9
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