MATH 1680/ 317 Qs with Certified Ans/ 2025
Classify the variable as qualitative or quantitative: the number of seats in a school auditorium -
(answers)quantitative
The following data represent the bachelor degrees of CEO's at area small businesses. Determine
the mode degree. (accounting 21, bus 44, liberal arts 15, marketing 25, and other 12) -
(answers)business
A researcher records the number of employees of each of the IT companies in the town of
Westmoore. The results are summarized in the table. Find the class width. (0-499, 500-999) -
(answers)500
A travel industry researcher interviews all of the passengers on five randomly selected cruises.
What sampling technique is used? - (answers)cluster
find z-score of 73 and mean of 56 and std dev of 6 - (answers)z=2.83
Explain the difference between a bar graph and a Pareto chart. Choose the correct answer below.
- (answers)A Pareto chart is a particular type of bar graph in which the bars are drawn in
decreasing order of height.
Determine the level of measurement of the variable.
height of a tree - (answers)ratio
Define statistics - (answers)Statistics is the science of collecting, organizing, summarizing, and
analyzing information to draw a conclusion and answer questions. In addition, statistics is about
providing a measure of confidence in any conclusions.
The repair costs (in dollars) for five cars which were crashed by a safety testing organization are
listed below. Find the mean cost of repair. (150,100,200,250,150) - (answers)170
, What is the difference between a bar chart and a histogram? - (answers)The bars on a bar chart
do not touch while the bars of a histogram do touch
An experiment in which the experimental unit (or subject) does not know which treatment he or
she is receiving is called a ________________. - (answers)single blind experiment
A _________________ is a numerical measurement describing some characteristic of a
population. - (answers)parameter
The grades are given for a student for a particular term. Find the grade point average. The point
values of grades are given below. Round to two decimal places as needed.
A: 4, B: 3, C: 2 (3), D: 1(7), F: 0(6) - (answers).81
One indicator that a pediatrician will use to diagnose an infant with "failure to thrive" is a weight
below the 5th percentile for the baby's age. Explain what this means. - (answers)A weight below
the 5th percentile means that the baby's weight is lower than at least 95% of babies that age.
Explain what is misleading about the graphic. - (answers)The vertical scale does not begin at
zero.
A(n) ____________________ is a bar graph in which the height of each rectangle is the
frequency or relative frequency of the class. The width of each rectangle is the same, and the
rectangles touch each other. - (answers)histogram
The following is a sample of 19 November utility bills (in dollars) from a neighborhood. What is
the largest bill in the sample that would not be considered an outlier?
52, 62, 66, 68, 72, 74, 76, 76, 76, 78, 78, 82, 84, 84, 86, 88, 92, 96, 110 - (answers)96
The pie chart shows the percentage of votes received by each candidate in the student council
presidential election.
Ann 32%, Ted 27%, Gina 22%, and Matt 19%
Who got the fewest votes? - (answers)matt
Classify the variable as qualitative or quantitative: the number of seats in a school auditorium -
(answers)quantitative
The following data represent the bachelor degrees of CEO's at area small businesses. Determine
the mode degree. (accounting 21, bus 44, liberal arts 15, marketing 25, and other 12) -
(answers)business
A researcher records the number of employees of each of the IT companies in the town of
Westmoore. The results are summarized in the table. Find the class width. (0-499, 500-999) -
(answers)500
A travel industry researcher interviews all of the passengers on five randomly selected cruises.
What sampling technique is used? - (answers)cluster
find z-score of 73 and mean of 56 and std dev of 6 - (answers)z=2.83
Explain the difference between a bar graph and a Pareto chart. Choose the correct answer below.
- (answers)A Pareto chart is a particular type of bar graph in which the bars are drawn in
decreasing order of height.
Determine the level of measurement of the variable.
height of a tree - (answers)ratio
Define statistics - (answers)Statistics is the science of collecting, organizing, summarizing, and
analyzing information to draw a conclusion and answer questions. In addition, statistics is about
providing a measure of confidence in any conclusions.
The repair costs (in dollars) for five cars which were crashed by a safety testing organization are
listed below. Find the mean cost of repair. (150,100,200,250,150) - (answers)170
, What is the difference between a bar chart and a histogram? - (answers)The bars on a bar chart
do not touch while the bars of a histogram do touch
An experiment in which the experimental unit (or subject) does not know which treatment he or
she is receiving is called a ________________. - (answers)single blind experiment
A _________________ is a numerical measurement describing some characteristic of a
population. - (answers)parameter
The grades are given for a student for a particular term. Find the grade point average. The point
values of grades are given below. Round to two decimal places as needed.
A: 4, B: 3, C: 2 (3), D: 1(7), F: 0(6) - (answers).81
One indicator that a pediatrician will use to diagnose an infant with "failure to thrive" is a weight
below the 5th percentile for the baby's age. Explain what this means. - (answers)A weight below
the 5th percentile means that the baby's weight is lower than at least 95% of babies that age.
Explain what is misleading about the graphic. - (answers)The vertical scale does not begin at
zero.
A(n) ____________________ is a bar graph in which the height of each rectangle is the
frequency or relative frequency of the class. The width of each rectangle is the same, and the
rectangles touch each other. - (answers)histogram
The following is a sample of 19 November utility bills (in dollars) from a neighborhood. What is
the largest bill in the sample that would not be considered an outlier?
52, 62, 66, 68, 72, 74, 76, 76, 76, 78, 78, 82, 84, 84, 86, 88, 92, 96, 110 - (answers)96
The pie chart shows the percentage of votes received by each candidate in the student council
presidential election.
Ann 32%, Ted 27%, Gina 22%, and Matt 19%
Who got the fewest votes? - (answers)matt
