1.

The following table gives the distribution of IQ's (intelligence quotients) of 60 pupils of class V in a school: IQ's: 125.5 to 13.25 118.5 to 125.5 111.5 to 118.5 104.5 to 111.5 97.5 to 104.5 90.5 to 97.5 83.5 to 90.5 76.5 to 83.5 69.5 to 76.5 62.5 to 69.5 No. of pupils: 1 3 4 6 10 12 15 5 3 1 Draw a frequency polygon for the above data.

Answer» The following table gives the distribution of IQ's (intelligence quotients) of 60 pupils of class V in a school:































IQ's: 125.5

to

13.25		 118.5

to

125.5		 111.5

to

118.5		 104.5

to

111.5		 97.5

to

104.5		 90.5

to

97.5		 83.5

to

90.5		 76.5

to

83.5		 69.5

to

76.5		 62.5

to

69.5
No.

of pupils:		 1 3 4 6 10 12 15 5 3 1



Draw a frequency polygon for the above data.


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