Question

If the lower and the upper limits of a class interval are $7.5$ and $12.5$, the class-interval is _____

• A. $12.5-7.5$
• B. $7.5-12.5$
• C. Either of $A$ and $B$
• D. None of these

Answer 1

Answer: (B)

$7.5-12.5$

While arranging large amount of data (in statistics), they are grouped into different classes to get an idea of the distribution, and the range of such class of data is called the Class Interval.

We know that, the range starts from lowest to largest data.

So, the class interval starts from lower limit and ends at upper limit.

$\therefore$ Class interval is given by (lower limit $-$ upper limit).

$\therefore$ Class-interval for $7.5$ and $12.5$ is $7.5-12.5$.

Hence, option B is correct.