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Question
Find the mean of the natural numbers from 3 to 12.
Solution
Numbers between 3 to 12 are 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12.
Here n = 10
`barx = (x_1 + x_2 + .... + x_n)/n`
∴ `barx = (3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12)/10`
= `75/10`
= 7.5
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