2
Straighterline Business Stats exam with || || || || ||
verified detailed solutions || ||
A marketing class of 50 students evaluated the instructor using the following
|| || || || || || || || || || || ||
scale: superior, good, average, poor, and inferior. The descriptive summary
|| || || || || || || || || ||
showed the following survey results: 2% superior, 8% good, 45% average, 45%
|| || || || || || || || || || || ||
poor, and 0% inferior. - Correct answer ✔Most students rated the instructor as
|| || || || || || || || || || || || ||
poor or average. || ||
The general process of gathering, organizing, summarizing, analyzing, and
|| || || || || || || || ||
interpreting data is called ____________. - Correct answer ✔Statistics || || || || || || || ||
The main purpose of descriptive statistics is to: - Correct answer ✔Summarize
|| || || || || || || || || || || ||
data in a useful and informative manner.
|| || || || || ||
An example of a qualitative variable is _________________. - Correct answer
|| || || || || || || || || || ||
✔Color of ink in a pen || || || || ||
The reported unemployment is 5.5% of the population. What measurement
|| || || || || || || || || ||
scale is used to measure unemployment? - Correct answer ✔interval or ratio
|| || || || || || || || || || ||
What level of measurement is the Centigrade temperature scale? - Correct
|| || || || || || || || || || ||
answer ✔interval ||
, 2
A group of women tried five brands of fingernail polish and ranked them
|| || || || || || || || || || || || ||
according to preference. What level of measurement is this? - Correct answer
|| || || || || || || || || || || ||
✔ordinal
The incomes of 50 loan applicants are obtained. Which level of measurement is
|| || || || || || || || || || || || ||
income? - Correct answer ✔ratio || || || ||
The members of each basketball team wear numbers on their jerseys. What
|| || || || || || || || || || || ||
scale of measurement are these numbers considered? - Correct answer
|| || || || || || || || || ||
✔nominal
Respondents were asked, "Do you now earn more than or less than you did five || || || || || || || || || || || || || || ||
years ago?" What is this level of measurement? - Correct answer ✔ordinal
|| || || || || || || || || || ||
What type of variable is the number of gallons of gasoline pumped by a filling
|| || || || || || || || || || || || || || ||
station during a day? - Correct answer ✔Continuous
|| || || || || || ||
A portion or part of a population is called a - Correct answer ✔sample
|| || || || || || || || || || || || ||
The mean, as a measure of central location, would be inappropriate for which
|| || || || || || || || || || || || ||
one of the following? - Correct answer ✔Marital status of college students at a
|| || || || || || || || || || || || || ||
particular university ||
A bottling company offers three kinds of delivery service: instant, same day, and
|| || || || || || || || || || || ||
within five days. The profit per delivery varies according to the kind of delivery.
|| || || || || || || || || || || || || || ||
The profit for an instant delivery is less than the other kinds because the driver
|| || || || || || || || || || || || || || ||
, 2
has to go directly to a grocery store with a small load and return to the bottling
|| || || || || || || || || || || || || || || || ||
plant. To find out what effect each type of delivery has on the profit picture, the
|| || || || || || || || || || || || || || || ||
company summarized the data in the following table based on deliveries for the
|| || || || || || || || || || || || ||
previous quarter. ||
||
What is the weighted mean profit per delivery? - Correct answer ✔$97
|| || || || || || || || || || ||
The times (in minutes) that several underwriters took to review applications for
|| || || || || || || || || || ||
similar insurance coverage are 50, 230, 52, and 57. What is the median length of
|| || || || || || || || || || || || || || ||
time required to review an application? - Correct answer ✔54.4
|| || || || || || || || || ||
A survey item asked students to indicate their class in college: freshman,
|| || || || || || || || || || || ||
sophomore, junior, or senior. Which measure(s) of central location would be || || || || || || || || || || ||
appropriate for the data generated by that questionnaire item? - Correct answer || || || || || || || || || || || ||
✔mode and median || ||
On a finance exam, 15 accounting majors had an average grade of 90. On the
|| || || || || || || || || || || || || || ||
same exam, 7 marketing majors averaged 85, and 10 finance majors averaged
|| || || || || || || || || || || ||
93. What is the weighted mean for all 32 students taking the exam? - Correct
|| || || || || || || || || || || || || || ||
answer ✔89.84 ||
For a data set with an odd number of observations that have been sorted from
|| || || || || || || || || || || || || || ||
smallest to largest values, where is the median located? - Correct answer ✔(n +
|| || || || || || || || || || || || || ||
1)/2
Straighterline Business Stats exam with || || || || ||
verified detailed solutions || ||
A marketing class of 50 students evaluated the instructor using the following
|| || || || || || || || || || || ||
scale: superior, good, average, poor, and inferior. The descriptive summary
|| || || || || || || || || ||
showed the following survey results: 2% superior, 8% good, 45% average, 45%
|| || || || || || || || || || || ||
poor, and 0% inferior. - Correct answer ✔Most students rated the instructor as
|| || || || || || || || || || || || ||
poor or average. || ||
The general process of gathering, organizing, summarizing, analyzing, and
|| || || || || || || || ||
interpreting data is called ____________. - Correct answer ✔Statistics || || || || || || || ||
The main purpose of descriptive statistics is to: - Correct answer ✔Summarize
|| || || || || || || || || || || ||
data in a useful and informative manner.
|| || || || || ||
An example of a qualitative variable is _________________. - Correct answer
|| || || || || || || || || || ||
✔Color of ink in a pen || || || || ||
The reported unemployment is 5.5% of the population. What measurement
|| || || || || || || || || ||
scale is used to measure unemployment? - Correct answer ✔interval or ratio
|| || || || || || || || || || ||
What level of measurement is the Centigrade temperature scale? - Correct
|| || || || || || || || || || ||
answer ✔interval ||
, 2
A group of women tried five brands of fingernail polish and ranked them
|| || || || || || || || || || || || ||
according to preference. What level of measurement is this? - Correct answer
|| || || || || || || || || || || ||
✔ordinal
The incomes of 50 loan applicants are obtained. Which level of measurement is
|| || || || || || || || || || || || ||
income? - Correct answer ✔ratio || || || ||
The members of each basketball team wear numbers on their jerseys. What
|| || || || || || || || || || || ||
scale of measurement are these numbers considered? - Correct answer
|| || || || || || || || || ||
✔nominal
Respondents were asked, "Do you now earn more than or less than you did five || || || || || || || || || || || || || || ||
years ago?" What is this level of measurement? - Correct answer ✔ordinal
|| || || || || || || || || || ||
What type of variable is the number of gallons of gasoline pumped by a filling
|| || || || || || || || || || || || || || ||
station during a day? - Correct answer ✔Continuous
|| || || || || || ||
A portion or part of a population is called a - Correct answer ✔sample
|| || || || || || || || || || || || ||
The mean, as a measure of central location, would be inappropriate for which
|| || || || || || || || || || || || ||
one of the following? - Correct answer ✔Marital status of college students at a
|| || || || || || || || || || || || || ||
particular university ||
A bottling company offers three kinds of delivery service: instant, same day, and
|| || || || || || || || || || || ||
within five days. The profit per delivery varies according to the kind of delivery.
|| || || || || || || || || || || || || || ||
The profit for an instant delivery is less than the other kinds because the driver
|| || || || || || || || || || || || || || ||
, 2
has to go directly to a grocery store with a small load and return to the bottling
|| || || || || || || || || || || || || || || || ||
plant. To find out what effect each type of delivery has on the profit picture, the
|| || || || || || || || || || || || || || || ||
company summarized the data in the following table based on deliveries for the
|| || || || || || || || || || || || ||
previous quarter. ||
||
What is the weighted mean profit per delivery? - Correct answer ✔$97
|| || || || || || || || || || ||
The times (in minutes) that several underwriters took to review applications for
|| || || || || || || || || || ||
similar insurance coverage are 50, 230, 52, and 57. What is the median length of
|| || || || || || || || || || || || || || ||
time required to review an application? - Correct answer ✔54.4
|| || || || || || || || || ||
A survey item asked students to indicate their class in college: freshman,
|| || || || || || || || || || || ||
sophomore, junior, or senior. Which measure(s) of central location would be || || || || || || || || || || ||
appropriate for the data generated by that questionnaire item? - Correct answer || || || || || || || || || || || ||
✔mode and median || ||
On a finance exam, 15 accounting majors had an average grade of 90. On the
|| || || || || || || || || || || || || || ||
same exam, 7 marketing majors averaged 85, and 10 finance majors averaged
|| || || || || || || || || || || ||
93. What is the weighted mean for all 32 students taking the exam? - Correct
|| || || || || || || || || || || || || || ||
answer ✔89.84 ||
For a data set with an odd number of observations that have been sorted from
|| || || || || || || || || || || || || || ||
smallest to largest values, where is the median located? - Correct answer ✔(n +
|| || || || || || || || || || || || || ||
1)/2
