Question

Which type of graph is preferable for comparing exact values of a of data points?

• A. pie chart
• B. bar graph
• C. both (a.) and (b.)

Answer 1

The correct option is B bar graph

A pie chart is a graph that represents the data in the circular graph. The chart is divided into sectors, where each sector shows the relative size of the quantity it represents.

Bar graphs use rectangular bars to show absolute values for each of the categories.

Example: Below charts represent the number of different plants in a garden.

From the pie chart, we can only compare the number of plants in the garden. But to find the exact number of plants we have to analyse the bar graph.
A pie chart provides relative comparison while a bar graph provides precise comparison.

Option (b.) is the correct choice.