Following are the steps involved in the construction of frequency distribution
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(1) Find minimum and maximum value in the data.
(2) Choose a number of sub intervals or cells of equal length that cover the range between the maximum and minimum without overlap.
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(3) Count the number of observations in the data that belong to each class interval, the count in each class is the class frequency or cell frequency.
(4) Determine the relative frequency in each class by dividing the class frequency by the total frequency.