Mathematics for IGCSE & O level - Categorical, Numerical And Grouped Data (Section 4 - No. 47)

For a set of grouped data, what is the process of obtaining the midpoint of a class interval?

Subtract the lower class limit from the upper class limit

Add the lower class limit and upper class limit, then divide by 2

Divide the lower class limit by the upper class limit

Multiply the class width by the frequency

The midpoint is obtained by summing the lower and upper limits and dividing by 2.