Question

Which type of graph is used to show the comparison of data values?

• A. Line Graph
• B. Bar Graph and Histogram
• C. Circle Graph

Answer 1

The correct option is B Bar Graph and Histogram

Bar graph and histogram are used mainly to show the comparison of data values in a dataset.

Bar graph compares the data for discrete variables while histogram compares the data for continuous variables.

Example: In a group of students, for comparing the number of students with weights (in kg) $15$, $30$, $45$, $60$ and $75$, we can use a $\underset{–}{\text{bar graph}}$.


Example: In a group of students, for comparing the number of students with weights (in kg) in the range of $15-30$, $30-45$, $45-60$ and $60-75$, we can use a $\underset{–}{\text{histogram}}$.