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## Difference Between Bar Graph And Histogram

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Question

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## Answer ( 1 )

## Difference Between Bar Graph And Histogram

Graphs are an important part of our everyday lives, and they can be used to communicate all sorts of data. There are two types of graphs commonly used in statistical analysis: bar graphs and histograms. Both are incredibly useful, but the differences between them should not be overlooked. In this article, we will discuss the differences between bar graphs and histograms and how each type of graph is best used.

## Definition of Bar Graph

A bar graph is a graphical representation of data using rectangular bars where the length of each bar is proportional to the value it represents. The bars can be either horizontal or vertical. Bar graphs are used to compare values between different categories.

A histogram is a graphical representation of data using bars where the height of each bar represents the number of items in that category. Histograms are used to show distributions of data.

## Definition of Histogram

A histogram is a graphical representation of data that uses bars of different heights to show the frequencies of occurrence for different values of a variable. The variable can be anything, such as height, weight, or IQ score. Histograms are used to get a quick and easy understanding of the distribution of data.

There are two main types of histograms:– Frequency histograms

– Relative frequency histograms

Frequency histograms tally the number of occurrences for each value of the variable. For example, if you were looking at the heights of people in a room, you would tally how many people were 60 inches tall, how many were 61 inches tall, and so on. To construct a frequency histogram, you need to have data that has already been grouped into intervals.

Relative frequency histograms express frequencies as percentages or proportions instead of actual numbers. For example, if you were looking at the ages of people in a room, you might express the relative frequencies as percentages: 30% are in their 20s, 40% are in their 30s, and so on. To construct a relative frequency histogram, you also need data that has already been grouped into intervals.

## Difference between Bar Graph and Histogram

There are several key differences between bar graphs and histograms. First, bar graphs are used to compare different items, while histograms are used to show a distribution of data. Second, bar graphs typically have spaces between the bars, while histograms typically do not. Finally, bar graphs can be either horizontal or vertical, while histograms are always vertical.

## Conclusion

Bar graphs and histograms are two of the most important tools used by data analysts to visualize data. Both bar graphs and histograms have a wide range of applications and can be used in many different contexts. While both provide useful information about the data, they are not interchangeable – each has its own particular strengths and weaknesses which make it better or worse for certain types of analysis depending on what type of data is being represented. Knowing when to use one tool versus another will help you get the most out of your analysis.