draw less than O for given data,upper limit of CI- less than 10,less than 20,less than 30 upto 90,.cumulative frequency-5,8,12,15,1822,29,38,49
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An ogive is drawn by --
Take the cumulative frequencies along the y axis (vertical axis) and the upper class limits on the x axis (horizontal axis)
Plot the cumulative frequencies against each upper class limit.
Join the points with a smooth curve.
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