Quantitative Methods Questions
The main difference between a bar graph and a histogram lies in the type of data they represent and the way they are used.
A bar graph is used to display categorical or qualitative data, where each category is represented by a separate bar. The bars are usually of equal width and are separated by spaces. The height of each bar represents the frequency or count of the category it represents. Bar graphs are commonly used to compare different categories or to show the distribution of data across different groups.
On the other hand, a histogram is used to display continuous or quantitative data, where the data is grouped into intervals or bins. The bars in a histogram are typically adjacent to each other and have varying widths, depending on the range of values within each interval. The height of each bar represents the frequency or count of data points falling within that interval. Histograms are commonly used to show the distribution of data and to identify patterns or trends in the data.
In summary, while both bar graphs and histograms are used to visually represent data, bar graphs are suitable for categorical data, while histograms are more appropriate for continuous data.