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प्रश्न
A boy scored following marks in various class tests during a term; each test being marked out of 20.
15, 17, 16, 7, 10, 12, 14, 16, 19, 12 and 16
What are his mean marks?
योग
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उत्तर
Arranging the given data in ascending order:
7, 10, 12, 12, 14, 15, 16, 16, 16, 17, 19
Mean `(barx) = (x_1 + x_2 + x_3 + ....... + x_n)/n`
= `154/11`
= 14
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