In a survey of 100 people who had recently purchased motorcycles, data on the following variables were recorded.
gender of purchaser
brand of motorcycle purchased
number of previous motorcycles owned by purchaser
telephone area code of purchaser
weight of motorcycle as equipped at purchase
(a) Which of these variables are categorical? (Select all that apply.)
gender of purchaser
brand of motorcycle purchased
number of previous motorcycles owned by purchaser
telephone area code of purchaser
weight of motorcycle as equipped at purchase
(b) Which of these variables are discrete numerical? (Select all that apply.)
gender of purchaser
brand of motorcycle purchased
number of previous motorcycles owned by purchaser
telephone area code of purchaser
weight of motorcycle as equipped at purchase
(c) Which type of graphical display would be an appropriate choice for displaying the distribution of gender, a bar chart or a dotplot?
bar chart
dotplot
(d) Which type of graphical display would be an appropriate choice for displaying the distribution of weight, a bar chart or a dotplot?
bar chart
dotplot
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(a) The variables that are categorical are:
- gender of purchaser
- brand of motorcycle purchased
- telephone area code of purchaser
(b) number of previous motorcycles owned by purchaser
(c) bar chart
(d) dotplot
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(a) The variables that are categorical are:
- gender of purchaser
- brand of motorcycle purchased
- telephone area code of purchaser
(b) None of these variables are discrete numerical. They are either categorical or continuous numerical.
(c) A bar chart would be an appropriate choice for displaying the distribution of gender.
(d) A dotplot would be an appropriate choice for displaying the distribution of weight.
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