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Statistic Answers

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Answers to Odd-Numbered Chapter Exercises

Chapter 1

1. a. Interval.

b. Ratio.

c. Ratio.

d. Nominal.

e. Ordinal.

f. Ratio.

g. Nominal.

h. Ordinal.

i. Nominal.

j. Ratio.

3. Answers will vary.

5. Qualitative data are not numerical, whereas quantitative data are numerical. Examples will vary by student.

7. Nominal, ordinal, interval, and ratio. Examples will vary.

9. a. Continuous, quantitative, ratio.

b. Discrete, qualitative, nominal.

c. Discrete, quantitative, ratio.

d. Discrete, qualitative, nominal.

e. Continuous, quantitative, interval.

f. Continuous, quantitative, interval.

g. Discrete, qualitative, ordinal.

h. Discrete, qualitative, ordinal.

i. Discrete, quantitative, ratio.

11. Based on these sample findings, we can infer that 270/300, or 90 percent, of the executives would move.

13. a. 2006 total sales ( 1 000 772; 2007 total sales ( 942 973 total sales declined about 6 percent from 2006 to 2007.

b. General Motors and Ford experienced losses of 17 and 19 percent, respectively. Meanwhile, Toyota gained 9.5 percent and Nissan about 9 percent. So, it would appear that there has been a significant shift within the market from domestic to foreign manufacturers.

15. a. Type is a qualitative variable; dollars is quantitative. b. Type is a nominal level variable; dollars is ratio level.

17. a. Country, G-20 and petroleum are qualitative variables. The others are quantitative. b. Country, G-20 and petroleum are nominal level. The other variables are ratio.

Chapter 2

1. Maxwell Heating & Air Conditioning far exceeds the other corporations in sales. Mancell Electric & Plumbing and Mizelle Roofing & Sheet Metal are the two corporations with the least amount of fourth quarter sales.

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