Applied Business Statisitics

Chapter 1: Assignment Solutions
(Do not share with anybody outside your class)

2. a. The ten elements are the ten cars

b. 5 variables: Size, Cylinders, City MPG, Highway MPG, and Fuel

c. Categorical variables: Size and Fuel

Quantitative variables: Cylinders, City MPG, and Highway MPG

d.
Variable
Measurement Scale
Size
Ordinal
Cylinders
Ratio
City MPG
Ratio
Highway MPG
Ratio
Fuel
Nominal

5. a. Average endowment = 74.6/7 = $10.657 billion

b. Average percentage admitted = 111/7 = 15.86%

c. 3 of 7 or 42.9% have NCAA Division III varsity teams

d. 3 of 7 or 42.9% have a City: Midsize campus setting

6. a. Quantitative

b. Categorical

c. Categorical

d. Quantitative

e. Categorical

8. a. 1015

b. Categorical

c. Percentages

d. .10(1015) = 101.5

101 or 102 respondents said the Federal Bank is doing a good job.

10. a. Categorical

b. Percentages

c. 44 of 1080 respondents or approximately 4% strongly agree with allowing drivers of motor vehicles to talk on a hand-held cell phone while driving.

d. 165 of the 1080 respondents or 15% of said they somewhat disagree and 741 or 69% said they strongly disagree. Thus, there does not appear to be general support for allowing drivers of motor vehicles to talk on a hand-held cell phone while driving.

11. a. Quantitative; ratio

b. Categorical; nominal

c. Categorical; ordinal

d. Quantitative; ratio

e. Categorical; ordinal. The response to this question was recorded as a numerical value from 1 to 10. While the data are numerical, they are not quantitative. The numerical values from 1 to 10 represent categories that order the overall rating somewhere between unacceptable and truly exceptional. The data may be ordered by response category with a higher number category indicating a higher overall rating.

While we prefer the categorical; ordinal answer above, at times statisticians may make the assumption