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Consider the marks, out of 100, obtained...

Consider the marks, out of 100, obtained by 51 students of a class in a test, given in Table 14.9

Text Solution

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we draw a frequency polygon by drawing a histogram first
calculating points where frequency =0
difference :10-0=10
first point `(0+10)/(2)-10=-5`
Last point `(90+100)/2+10=95+10=105`
so we plot the points (-5,0)&(105,0)
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