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Frequency Polygon

C.I0-10,10-20...

Question

C.I{0-10,10-20, 20-30, 30-40}, f {5, 7, 8, 9}- Calculate the cumulative frequency and match the following.

A

20

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B

29

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C

12

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D

5

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Solution

$5$
$5 + 7 = 12$
$12 + 8 = 20$
$20 + 9 = 29$

We add successive frequencies of all the x values.

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