Term
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Definition
| A frequency table lists the categories in a categorical variable and gives the count (or percentage)of observations for each category. |
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Term
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Definition
The distribution of a variable gives
the possible values of the variable and the relative frequency of each value. |
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Term
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Definition
| Bar charts show a bar whose area represents the count (or percentage) of observations for each category of a categorical variable. |
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Term
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Definition
| Pie charts show how a "whole" divides into categories by showing a wedge of a circle whose area corresponds to the proportion in each category. |
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Term
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Definition
| In a contingency table, the distribution of either variable alone is called the marginal distribution. The counts or percentages are the totals found in the margins (last row or column) of the table. |
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Term
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Definition
| Variables are said to be independent if the conditional distribution of one variable is roughly the same for each category of the other. |
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Term
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Definition
| When we see evidence that one variable depends on another, we say there's an association between them. |
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