Question

If 20-30 is the class interval of grouped data then lower class limit is

Answer 1

Given:

$20-30$ is the class interval of grouped data.

To find:

Lower class limit of given class interval.

Solution:

The lower class limit of a class interval is the smallest data value that go into the class.

∴ Lower class limit of class interval $20-30$ is the smallest data value of the given class interval, that is, $20$.