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Mean of Ungrouped Data

Yield of soya...

Question

Yield of soyabean per acre(in quintals) in Mukund's field for 9 years was 7, 9, 5, 8, 8, 9, 6, 4, 7. Find the mean yield per acre.

A

6 quintals

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B

8 quintals

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C

7 quintals

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D

9 quintals

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Solution

The correct option is C 7 quintals
$M e a n = \frac{T h e s u m o f a l l o b s e r v a t i o n s i n t h e d a t a}{T o t a l n u m b e r o f o b s e r v a t i o n s}$

= $\frac{7 + 9 + 5 + 8 + 8 + 9 + 6 + 4 + 7}{9}$
= $\frac{63}{9}$
= 7 quintals

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