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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Definition
| 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
| in a statistical display, each data value should be represented by the same amount of area |
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Definition
| shows a bar whose area represents the count of observations for each category of a categorical variable |
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Definition
| shows 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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Definition
| displays counts and, sometimes, percentages of individuals falling into named categories on two or more variables; the table categorizes the individuals on all variables at least once to reveal possible patterns in one variable that may be contingent on the category of the other |
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Term
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Definition
| in a contingency table, the distribution of either variable alone |
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Definition
| the distribution of a variable restricting the WHO to consider only a smaller group of individuals |
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| variables are said to be independent if the conditional distribution of one variable is the same for each category of the other |
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Definition
| displays the conditional distribution of a categorical variable within each category of another variable |
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Term
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Definition
| when averages are taken across different groups, they can appear to contradict the overall averages |
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