Question

for which of the following research objectives would a pie chart be most suitable?
a. illustrating the correlation between two variables
b. tracking changes over time
c. showing the composition of a whole
d. comparing quantities across different categories

Explanation:

A pie chart is a circular statistical graphic, which is divided into slices to illustrate numerical proportion. It is mainly used to show the composition of a whole, where each slice represents a proportion of the total.

• Option a: Illustrating the correlation between two variables is better done with a scatter - plot.
• Option b: Tracking changes over time is more suitable for a line - chart.
• Option c: This is the main purpose of a pie - chart as it shows how each part contributes to the whole.
• Option d: Comparing quantities across different categories can be better achieved with a bar - chart.

Answer:

C. Showing the composition of a whole