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State if the following is true or false.

A cumulative frequency curve for the following data by less than method is given by the following graph.

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True

False

answer is A.

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Detailed Solution

Consider the table,
Question Image

For drawing the cumulative frequency curve by less than the method we plot

9.5, 5, 19.5, 20, 29.5, 40, 39.5, 63, 49.5, 80, 59.5, 91, 69.5, 100

on the graph and join them by freehand.
The curve obtained this way will be our required curve.
Question Image

The curve is the required cumulative frequency curve.
Hence, it is true that a cumulative frequency curve for the given data by less than method is given by the above graph.
Hence, option 1 is correct.

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