Mark of a given class in a frequency distribution

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A plot of the points (x,f), where x represents the class mark of a given class in a frequency distribution and f represents its frequency, is called a frequency polygon. Construct a frequency polygon using the data in Exercise 116.

Exercise:

Eighty pilots were tested in a flight simulator and the time for each to take corrective action for a given emergency was measured in seconds, with the following results:

Construct a frequency distribution of these data.

Reference no: EM131129527

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