Q5 of 47 Page 70

Construct a histogram and frequency polygon for the following data

GIVEN.


⇒ First draw histogram of given table


As the data is in continuous form


⇒ Mark class interval along X axis on uniform scale


⇒ Mark frequency along Y axis on uniform scale


⇒ Construct rectangles with class intervals as base and


corresponding frequencies as height.



⇒ Take out the midpoints of each interval and imagine 2


midpoints at 1st and last join all midpoints and imaginary midpoints to get frequency polygon.


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