vocab
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| frequency (relative frequency) table | lists the categories in a categorical variable and gives the count (or percentage) of observations for each category
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| distribution | gives the possible values of the variable and the relative frequency of each variable
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| area principle | in a statistical display, each data value should be represented by the same amount of area
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| bar chart (relative frequency bar chart) | show a bar whose area represents the count (or percentage) of observations for each category of a categorical variable
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| pie chart | 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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| categorical data condition | the fact that graphs and displays can only be used for categorical data used in this chapter
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| contingency table | displays counts and sometimes percentages of individuals falling into named categories on two or more variables, categorizes the individuals on all variables at once to reveal possible patterns in one variable that may be contingent on another cat.
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| marginal distribution | 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)
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| conditional distribution | the distribution of a variable restricting the WHO to consider only a smaller group of individuals is called a conditional distribution
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| independence | variables are independent if the conditional distribution of one variable is the same category of the other
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| segmented bar chart | displays the conditional distribution of a categorical variable within each category of another variable
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| Simpson's paradox | when averages are taken across different groups they can appear to contradict the overall averages
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
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