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| A histogram is commonly used for continuous variables. |
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| The histogram is the next best alternative for displaying information about nominal variables. |
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| In a pie chart, the size of the slices depends on whether proportions or percentages are displayed. |
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Term
| A bar graph is an appropriate graphic device for nominal and ordinal level variables. |
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Term
| A frequency polygon is an appropriate graphic device for nominal and ordinal level variables. |
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Term
In a pie chart, the slices of the pie should sum to _____.
a. N, in the case frequencies
b. 1.0, in the case of proportions
c. 100, in the case of percentages
d. all of the above |
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Term
Typically, the vertical axis of a histogram is used to display the _____.
a. proportion, but not the frequency or percentage
b. percentage, but not the frequency or proportion
c. frequency, but not the proportion or percentage
d. depending on which is used, the vertical axis displays the frequency, the proportion, or the percentage |
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Term
| A chart displaying changes in a variable at different points in time is known as a _____? |
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Term
For which of the following would a pie chart be least appropriate?
a. a grouped interval/ratio variable
b. a nominal variable
c. an ungrouped interval/ratio variable
d. an ordinal variable |
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Definition
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Term
Which of the following is most appropriate for graphing a nominal variable?
a. stem and leaf plot
b. bar chart
c. frequency polygon
d. histogram |
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Term
For which of the following variables should the bars in a graph be separated rather than contiguous?
a. occupation
b. years of education
c. income
d. age |
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Definition
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Term
Which of the following will visually exaggerate the differences in a bar graph?
a. using frequencies in a graph
b. using percentages in a graph
c. making the vertical axis shorter
d. all of the above |
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Term
| In a time series chart, which variable of interest is usually placed along the horizontal axis? |
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| A graph showing the differences in frequencies, proportions, or percentages among the categories of an interval/ratio variable is referred to as a _____. |
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