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
(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