Relative Frequency and Percentage Frequency Assignment Help

Frequency Distribution Graphical Representation - Relative Frequency and Percentage Frequency

Statistics >>Relative Frequency and Percentage Frequency

The frequency of a class when expressed as a rate of the total frequency of the distribution is called relative frequency and percentage frequency is the ratio of class ­frequency to the total frequency expressed as percentage.

Relative Frequency = class-frequency / Total Frequency

        Percentage Frequency = Class frequency / Total Frequency

J.       Frequency Density

It is the ratio of the class frequency to the width of that class.

Frequency density = Class Frequency / Width of Class

K.      Cumulative Frequency

If for each class the frequencies given are aggregates of the preceding frequencies they are known- as cumulative frequencies.

L.      Methods of Forming Class-intervals

There are two ways of forming class intervals.

Exclusive Method

Under this method a class interval is such that the lower limit is included in the preceding class where as the upper class limit is included in the succeeding class interval.

Inclusive Method

If a interval is such that the lower as well as the upper class limits are included in the same class interval, it is called inclusive class interval.

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