For the following data- draw a histogram and a frequency polygon- beginarray -c-c-c-c-c-c-c-c-c-c-c-Wline Marks-0-10-10-20-20-30-30-40-40-50-50-60-60-70-70-80-80-90-90-100111hline e n d a r r a y D- None of these

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Frequency Polygon

For the follo...

Question

For the following data, draw a histogram and a frequency polygon:

$\begin{matrix} M a r k s & 0 - 10 & 10 - 20 & 20 - 30 & 30 - 40 & 40 - 50 & 50 - 60 & 60 - 70 & 70 - 80 & 80 - 90 & 90 - 100 N o . o f s t u d e n t s & 5 & 10 & 4 & 6 & 7 & 3 & 2 & 2 & 3 & 9 \end{matrix}$

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None of these

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Solution

The correct option is A

In the figure histogram and a frequency polygon (in dotted lines) are drawn on the same scale.

By drawing corresponding height bars for each class interval, we get a histogram.
Join the midpoints of each class interval on the upper side of adjacent bars to get the frequecy polygon.

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For the following data, draw a histogram and a frequency polygon: Marks0−1010−2020−3030−4040−5050−6060−7070−8080−9090−100No. of students51046732239

For the following data, draw a histogram and a frequency polygon:

$\begin{matrix} M a r k s & 0 - 10 & 10 - 20 & 20 - 30 & 30 - 40 & 40 - 50 & 50 - 60 & 60 - 70 & 70 - 80 & 80 - 90 & 90 - 100 N o . o f s t u d e n t s & 5 & 10 & 4 & 6 & 7 & 3 & 2 & 2 & 3 & 9 \end{matrix}$