RELATIVE FREQUENCY OF A CLASS INTERVAL

Relative frequency of a class interval may be defined as the ratio of the class frequency to the total frequency.

To have better understanding on relative frequency of a class interval, let us consider the frequency distribution given below.

In the above frequency distribution of weights of 36 students, the relative frequencies for the first two class intervals are 3/36 and 4/36 respectively.

Apart from "Relative frequency of a class interval", let us look at some other important terms associated with a frequency distribution.

Percentage Frequency

Percentage frequency of a class interval may be defined as the ratio of class frequency to the total frequency, expressed as a percentage.

In the above frequency distribution of weights of 36 students, the percentage frequencies for the first two class intervals are 300/36 and 400/36 respectively.

It is quite obvious that whereas the relative frequencies add up to unity, the percentage frequencies add up to one hundred.

Related Topics

Percentage frequency of a class interval

Frequency density of a class interval

Class limits and class boundaries

Difference between class limit and class boundary

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