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Arithmetic Mean and Range

Question

The weights of 9 apples are 50,60,65,62,67,70,64,45,48 grams Their mean weight is
$59 g r a m$
$62 g r a m$
$60.5 g r a m$
$60 g r a m$

A

59 g r a m

B

60.5 g r a m

C

60 g r a m

D

62 g r a m

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Solution

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Mean = $\frac{T o t a l w e i g h t o f 9 a p p l e s}{T o t a l n o o f a p p l e}$
$\Rightarrow \frac{50 + 60 + 65 + 62 + 67 + 70 + 64 + 45 + 48}{9}$
$\Rightarrow \frac{531}{9} = 59$

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