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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Vote
(a) The categorical variables are:
- Gender of purchaser
- Brand of motorcycle purchased
- Telephone area code of purchaser
(b) The discrete numerical variable is:
- Number of previous motorcycles owned by purchaser
(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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