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Mean

The mean of t...

Question

The mean of the given data is .

Value Frequency

5 4

10 4

15 4

20 4

A

10

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B

12.5

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C

15

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D

10

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Solution

The correct option is B 12.5
Mean $= \frac{\sum f_{i} x_{i}}{\sum f_{i}}$

$= \frac{4 \times 5 + 4 \times 10 + 4 \times 15 + 4 \times 20}{16}$

$= \frac{4 \times (5 + 10 + 15 + 20)}{16} = 12.5$

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