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प्रश्न
Find the mean of all numbers from 7 to 17.
योग
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उत्तर
The numbers are:
7,8, 9, 10, 11, 12, 13, 14, 15, 16, 17
`barx = (x_1 + x_2 + x_3 + .... + x_n)/n`
n = 11
⇒ `barx = (7 + 8 + 9 + 10 + 11 + 12 + 13 + 14 + 15 + 16 + 17)/11`
⇒ `barx = 132/11`
⇒ `barx = 12`
Therefore, Mean of numbers from 7 to 17 = 12
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