An ogive is a method in which:

Correct option is A

An ogive (also called a cumulative frequency graph) is a type of line graph that represents the cumulative frequency distribution of a dataset. In an ogive, the cumulative frequency is plotted against class boundaries, showing how values accumulate over intervals. It is commonly used in statistics and data analysis to understand distribution trends and percentile ranks.

There are two types of ogives:

1. Less than ogive – plots cumulative frequency against the upper class boundary.
2. More than ogive – plots cumulative frequency against the lower class boundary.

• Purpose: Used to determine medians, percentiles, and quartiles.
• Graph Representation: A rising curve showing the cumulative total of frequencies.
• Used in: Population studies, economics, and statistical data representation.