What are the key differences between a bar graph and a histogram?
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1. Data Type:
Bar Graph: Used for categorical data (e.g., colors, brands, countries). The bars represent discrete categories.
Histogram: Used for numerical data (e.g., ages, heights, incomes). The bars represent ranges or intervals of continuous data.
2. Spacing:
Bar Graph: Bars are typically separated by gaps to indicate distinct categories.
Histogram: Bars are touching to show that the data is continuous and there are no gaps between the intervals.
3. X-Axis Labels:
Bar Graph: X-axis labels are specific categories.
Histogram: X-axis labels are ranges or intervals of the numerical data.
4. Purpose:
Bar Graph: Compares frequencies of different categories.
Histogram: Shows the distribution of numerical data, including shape, center, and spread.