In Minitab, the height of each bar on a graph represents a statistic for a category (categorical data) or interval (continuous data).
Minitab displays bars by default for histograms, bar charts, and Pareto charts:
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Histogram: By default, bars represent the number (frequency) of observations falling within each interval (bin) for a continuous variable. |
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Bar chart: Bars represent category tallies, different statistics of categories (e.g., mean, sum), or summary values of categories. |
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Pareto chart: Bars represent counts for types of defects. |
You can display bars in marginal plots, interval plots, and individual value plots. For example:
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Marginal plot: Histograms in the margins represent the frequency of x and y values, allowing you to visualize the distributions of x and y, as well as their relationship. |
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Interval plot: Bars represent the means of the categories, so that you to compare the means of categories as you examine their confidence intervals. |
