Multiple choice
1. What graph should be used to show the relationship between the parts and the whole?
A. histogram
B. pie chart
C. bar chart
D. box plot
E. time series plot
2. A small independent organic food store offers a variety of specialty coffees. To determine whether price has an impact on sales, the managers kept track of how many pounds of each variety of coffee were sold last month. The data are shown in the table below.
PRICE PER POUNDPOUNDS SOLD
$ 3.99 75
$ 5.99 60
$ 7.00 65
$ 12.00 45
$ 4.50 80
$ 7.50 70
$ 15.00 25
$ 10.00 35
$ 12.50 40
$ 8.99 50
The correlation coefficient is
A. 0.8585
B. 0.9265
C. -0.9265
D. -0.8585
E. none of the above
3. Which of the following survey questions is a loaded question?
A. Given the prevalence of identity theft, are you reluctant to provide credit card information online?
B. Are you confident that any information you provide online is secure?
C. Are you concerned about the security of online transactions?
D. Both A and B
E. Both B and C
4. In the Consumer Reports Health study on arthritis drugs, possible side effects is what kind of variable?
A. Quantitative.
B. Categorical.
C. Nominal.
D. Both A and C.
E. Both B and C.
