Question

# The following table gives the height of treesHeightLess than 7Less than 14Less than 21Less than 28Less than 35Less than 42Less than 49Less than 56No. of trees254595140235275320360Draw "less than" ogive and "more than" ogive

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Solution

## Consider the following table.Height (less than)Height-classNo. of treesCumulative frequencySuitable points70-72626(7,26)147-143157(14,57)2114-213592(21,92)2821-2842134(28,134)3528-3582216(35,216)4235-4271287(42,287)4942-4954341(49,314)5649-5619360(56,360)Now draw the less than ogive using suitable points.Now prepare the table for cumulative frequency table for more than seriesHeight (more than)Height-classNo. of treesCumulative frequencySuitable points00-726360(0,360)77-1431334(7,334)1414-2135303(14,303)2121-2842268(21,268)2828-3582226(28,226)3535-4271144(35,144)4242-495473(42,73)4949-561954(49,54) Now draw the more than ogive using suitable points.

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