1. Which display is most likely to reveal association?

A. Dot plot.

B. Scatter plot.

C. Histogram.

D. Radar chart.

2. A line chart would not be suitable to display which data?

A. U.S. oil imports from OPEC nations for the last 20 years.

B. Annual compensation of the top 50 CEOs.

C. Exxon-Mobil's quarterly sales data for the last 5 years.

D. Daily stock market closing prices of Microsoft for the past month.

3. Which is not considered a deceptive graphical technique?

A. Undefined units.

B. 2D graphs.

C. Authority figures.

D. Distracting pictures.

4. The distribution pictured below is 

A. bimodal and skewed right.

B. bimodal and skewed left.

C. skewed right.

D. skewed left.

5. Bob found an error in the following frequency distribution. What is it? 

A. The classes are not mutually exclusive

B. The classes are not collectively exhaustive.

C. There are too few class intervals.

D. The first class should start at 0.

6. If you have 32 data points, how many classes would Sturges' Rule suggest?

A. 5

B. 6

C. 7

D. 8

7. Which is not a characteristic of a dot plot?

A. Simplicity.

B. Legibility.

C. Wide bins.

D. Dot stacking.

8. Histograms generally do not reveal the

A. exact data range.

B. modal classes (bins).

C. degree of skewness.

D. relative frequencies.

9. Scatter plots

A. are useful in visualizing trends over time.

B. are useful in identifying causal relationships.

C. are often fitted with a linear equation in Excel.

D. are applicable mainly to discrete data.

10. This histogram shows Chris's golf scores in his last 77 rounds at Devil's Ridge. Which is not a correct statement?

A. The number of bins is consistent with Sturges' Rule.

B. The histogram has a noticeable bimodal shape.

C. The modal class is 78 < 80.

D. About 19% of his scores are in the interval 74 < 76.

11. The graph below illustrates which deceptive technique? 

A. poor Y axis scale.

B. area trick.

C. unclear grid lines.

D. dramatic title.

12. Below is a frequency distribution of earnings of 50 contractors in a country. 

Regarding this distribution, which of the following is correct?

A. The frequency distribution contains too many class intervals.

B. The class intervals are not mutually exclusive.

C. Too few classes were chosen.

D. The class intervals are too wide.

13. If you have 256 data points, how many classes would Sturges' Rule suggest?

A. 6

B. 7

C. 8

D. 9

14. Variables X and Y have the strongest correlation in which scatter plot?

A. Figure A.

B. Figure B.

C. They are the same.