Question

When data is represented with a rectangular bar then it is called as .

• A. bar graph
• B. circle graph
• C. scatter graph

Answer 1

The correct option is A bar graph

Consider the following data set of number of sales units corresponding to each year:

Year	2018	2019	2020
Sales (Number of units)	500	600	400

The bar graph of the data set is as follows:


Here, the year is represented in the horizontal axis and the number of sales units is represented in the vertical axis.

$\therefore$ The height of the bar corresponding to the year proportionately represents the number of units sold in that year.

We may also deduce from the graph that between those three years, sales increased until 2019, peaked at a maximum, and then declined to a minimum in 2020.