Table of Contents

## What is a Bar Graph?

A bar graph is a graphical representation of data in which rectangular bars are used to indicate the magnitude of the data values. The bars may be either vertical or horizontal. The height of the bar indicates the magnitude of the value, and the width of the bar indicates the number of data points.

## Bar Graph Definition

A bar graph is a graphical representation of data in which rectangular bars are used to compare the size of different variables. The bars can be either vertical or horizontal, and the data can be displayed using either percentages or actual numbers.

## Types of Bar Charts

There are three types of bar charts:

Vertical bar chart: This is the most common type of bar chart. It is used to compare values across categories. The bars are placed vertically, and the height of each bar represents the value for that category.

Horizontal bar chart: This type of bar chart is used to compare values across time periods. The bars are placed horizontally, and the length of each bar represents the value for that category.

Stacked bar chart: This type of bar chart is used to compare values across categories. The bars are placed vertically, and the height of each bar represents the value for that category. However, the bars are stacked on top of each other, so you can see the total value for each category.

## The Types of Bar Charts are as follows

1. Horizontal Bar Chart

2. Vertical Bar Chart

3. Stacked Bar Chart

4. Clustered Bar Chart

5. Grouped Bar Chart

## Uses of Bar Graphs

Bar graphs are a great way to compare and contrast data. They can be used to show how one variable changes over time or how two different variables compare. Bar graphs can also be used to show proportions.

## What is a Histogram and Why Use a Histogram Instead of a Bar Graph?

A histogram is a graphical representation of the distribution of data. It is a graph of the number of data items that fall into each category. A histogram is similar to a bar graph, but it is used when the data are not evenly distributed.

## What is Histogram?

A histogram is a graphical representation of the distribution of numerical data. It is an estimate of the probability distribution of a continuous variable (quantity) and is created by dividing the range of values of the variable into a number of equal intervals, or bins, and counting the number of observations that fall into each interval.

## A Histogram is Used for Which Type of Data?

A histogram is used for data that is displayed in a frequency table.

## Histogram Types

There are three types of histograms:

1. Frequency histogram

2. Relative frequency histogram

3. Cumulative frequency histogram

1. Frequency histogram: This histogram measures the frequency of occurrence of a given data point.

2. Relative frequency histogram: This histogram measures the relative frequency of occurrence of a given data point.

3. Cumulative frequency histogram: This histogram measures the cumulative frequency of occurrence of a given data point.

## Key Difference Between Bar Graphs and Histogram

A bar graph is a graphical representation of data that is displayed as a series of rectangles, one for each data item. The rectangle’s height is proportional to the value of the data item. Histograms are graphical representations of data that are displayed as a series of bars, one for each data item. The bar’s width is proportional to the value of the data item.

A bar graph is used to compare data items within a category. A histogram is used to compare data items within a range.