How to Find Mode of Grouped Data?

Identify the modal class, the class interval with the highest frequency

Note the lower boundary of the modal class as l

Note the frequency of the modal class as f1

Note the frequency of the class before the modal class as f0

Note the frequency of the class after the modal class as f2

Note the class width as h

Use the formula: Mode = l + [(f1 – f0) / (2f1 – f0 – f2)] × h

Substitute the values into the formula

Calculate the mode value