Question 65
Find the mean of first six multiples of 4.

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Solution

First six multiples of 4 are 4, 8, 12, 16, 20, 24.
$M e a n = \frac{S u m o f a l l o b s e r v a t i o n}{T o t a l n u m b e r o f o b s e r v a t i o n s} = \frac{4 + 8 + 12 + 16 + 20 + 24}{6} = \frac{84}{6} = 14$
Hence, the mean of first six multiples of 4 is 14.

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