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  • The following table gives the distribution of students of two sections according to the marks obtained by them:

Q. 6.     The following table gives the distribution of students of two sections according to the marks obtained by them:

              

             Represent the marks of the students of both the sections on the same graph by two frequency polygons. From the two polygons compare the performance of the two sections

Answers (1)

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To make the frequency polygon we first modify the table as follows

\\Class\ marks= \frac{Upper\ limit\ of\ class\ interval+Lower\ limit\ of\ class\ interval}{2}

To make the frequency polygon we mark the marks on the x-axis and the number of students on the y-axis.

The representation of the given information in the form of frequency polygon is as follows.

From the frequency polygon we can see that the performance of section A is better.

 

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