Q6 of 35 Page 209

I draw the frequency polygon for the following frequency distribution table.

We will find the middle value of classes and then plot it on a graph with frequency as x coordinate and middle value as y coordinate to get the frequency polygon.



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4

I draw the histogram of the frequency distribution table given below:

 5

I construct the frequency polygon for the following marks obtained by 75 leamers of Pritha’s school.


In the graph paper, taking suitable measures along horizontal and vertical lines, the points (20, 0), (30, 12), (40, 18), (50, 21), (60, 15), (70, 6), (80, 3) and (90, 0) are plotted on the graph paper and then I draw the frequency polygon by adding them.

 7

By drawing histogram, I draw the frequency polygon of the frequency distribution table given below:

 8

I draw the histogram for the following frequency distribution table.


Hints: At first, by exclusive class method the statistical data will be constructed as frequency distribution table with class-boundaries given below: