From the given histogram find the cumulative frequency for class interval 20-30.

Bar Graph

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Histogram

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Frequency Polygon

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Pie Chart

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Solution

The correct option is C Frequency Polygon
$\begin{matrix} C l a s s I n t e r v a l & F r e q u e n c y & C . F . 0 - 10 & 6 & 6 10 - 20 & 9 & 15 20 - 30 & 12 & 27 30 - 40 & 10 & 37 40 - 50 & 5 & 42 \end{matrix}$

From the table it is observed that cumulative frequency for the class interval 30-40 is 27.

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Similar questions

From the given histogram find the cumulative frequency for class interval 20-30.

If the cumulative frequency for the class interval (50-60) is 92, then find x

$\begin{matrix} Class Interval & 0 - 10 & 10 - 20 & 20 - 30 & 30 - 40 & 40 - 50 & 50 - 60 Frequency & 12 & 20 & x & 18 & 10 & 6 \end{matrix}$

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