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Commutative Frequency Curve – Statistics

Commutative frequency curve is a graph drawn with commutative frequency against the upper limit of class interval. The points are joined by a smooth curve and the curve is joined to the lower limit of the first class interval.

Example:

Draw given (cumulative frequency curve) for the data given below:

Class interval frequency
1000 – 1100 52
1100 – 1200 35
1200 – 1300 25
1300 – 1400 14
1400 – 1500 41
1500 – 1600 33

Solution:

Class interval frequency Cumulative frequency
1000 – 1100 52 52
1100 – 1200 35 87
1200 – 1300 25 112
1300 – 1400 14 126
1400 – 1500 41 167
1500 – 1600 33 200

Statistics[Class 9]

Ashoora Arif

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