Question

is a chart that plots data using rectangular bars or columns.

• A. Bar graph
• B. Circle graph
• C. Scatter graph

Answer 1

The correct option is A Bar graph

When data is plotted using a rectangular bar, then it is called as a bar graph.
The plot of bar graph:
The categorical data of data set will be marked in the x-axis
The numerical data of data set will be marked in the y-axis

Consider the following data set of the 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 categories, i.e., years, are represented in the horizontal axis.

The heights of the rectangular bars are proportional to the relative frequencies (numerical data of data set) of the corresponding categories.

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