MATH 225N WEEK 8 STATISTICS QUIZ FINAL
PAPER 2026 TEST PAPER QUESTIONS AND
SOLUTIONS GRADED A+
◉ Quiz 1:A study was conducted to determine the effect of 5 hour
energy drink on student's retention in a statistics course. Half of the
students received the 5 hour energy drink and the other half
received a placebo. Which group was the control? Answer: students
that received the placebo
◉ Quiz 1:A circle or 'pie' chart may be used to display the: Answer:
Percentage of discharges by month
◉ Quiz 1:Identify the level of measurement corresponding to the
data "Gross income for each of the past 5 years" associated with
robotics. Answer: ratio
◉ Quiz 1:Identify the level of measurement corresponding to the
data "Gross income for each of the past 5 years" associated with
robotics. Answer: convenience sampling
◉ Quiz 1:Data on 1,500 students' height were collected at a larger
university in the East Coast. Which of the following is the best chart
for presenting the information? Answer: A histogram.
,◉ Quiz 1: Suppose that you have a fish tank full of salt water and you
need to know the exact salt content of the water. To analyze the
water, you scoop out a cup of water. In statistical language, the cup of
water is a: Answer: sample
◉ Quiz 1:The archeological site of Tara is more than 4000 years old.
Tradition states that Tara was the seat of the high kings of Ireland.
Because of its archeological importance, Tara has received extensive
study (Reference: Tara: An Archeological survey by Conor Newman,
Royal Irish Academy, Dublin). Suppose an archeologist wants to
estimate the density of ferromagnetic artifacts in the Tara region.
For this purpose, a random sample of 55 plots, each of size 100
square meters, is used. The number of ferromagnetic artifacts for
each plot is determined. Answer: quantitative
◉ Quiz 1:Janie ranked school A as #1 in quality on a five point scale.
Tom ranked school A as #3 in quality on this same scale.
1 (high quality) 2 3 4 5 (low quality)
Can we say that Janie liked school A three times more than did Tom?
Answer: No, Tom liked the school less than Janie, but we do not
know by how much.
◉ Quiz 1: A type of vertical bar chart in which the categories are
plotted in the descending rank order of the magnitude of their
frequencies is called a Answer: Pareto chart
, ◉ Quiz 1: Identify the variable in the information below.
What is the average miles per gallon (mpg) for all new cars? Using
Consumer Reports, a random sample of 35 new cars gave an average
of 21.1 mpg. Answer: miles per gallon
◉ Quiz 1: You have collected data on the monthly seasonally
adjusted birth rates for the United States from 1998 to 2007. Which
of the following is the best for presenting the data? Answer: A time-
series plot.
◉ Quiz 1:Find the technique for gathering data in the study below.
An ecology class used binoculars to watch 23 turtles at Lowell Pond.
It was found that 18 were box turtles, and 5 were snapping turtles.
Answer: observational study
◉ Quiz 1: At Westgate Community College, a survey was done to
determine when students are available for class. A questionnaire
was given to a random sample of students. The instructions were to
mark each of the time categories in which they could take classes.
Many students marked more than one category. Responses from the
students in the sample indicated that 52 would take early morning
classes, 85 would take mid-morning classes, 41 would take
afternoon classes and 37 would take evening classes. Would a circle
graph be appropriate for this data? Answer: No. Since there were
PAPER 2026 TEST PAPER QUESTIONS AND
SOLUTIONS GRADED A+
◉ Quiz 1:A study was conducted to determine the effect of 5 hour
energy drink on student's retention in a statistics course. Half of the
students received the 5 hour energy drink and the other half
received a placebo. Which group was the control? Answer: students
that received the placebo
◉ Quiz 1:A circle or 'pie' chart may be used to display the: Answer:
Percentage of discharges by month
◉ Quiz 1:Identify the level of measurement corresponding to the
data "Gross income for each of the past 5 years" associated with
robotics. Answer: ratio
◉ Quiz 1:Identify the level of measurement corresponding to the
data "Gross income for each of the past 5 years" associated with
robotics. Answer: convenience sampling
◉ Quiz 1:Data on 1,500 students' height were collected at a larger
university in the East Coast. Which of the following is the best chart
for presenting the information? Answer: A histogram.
,◉ Quiz 1: Suppose that you have a fish tank full of salt water and you
need to know the exact salt content of the water. To analyze the
water, you scoop out a cup of water. In statistical language, the cup of
water is a: Answer: sample
◉ Quiz 1:The archeological site of Tara is more than 4000 years old.
Tradition states that Tara was the seat of the high kings of Ireland.
Because of its archeological importance, Tara has received extensive
study (Reference: Tara: An Archeological survey by Conor Newman,
Royal Irish Academy, Dublin). Suppose an archeologist wants to
estimate the density of ferromagnetic artifacts in the Tara region.
For this purpose, a random sample of 55 plots, each of size 100
square meters, is used. The number of ferromagnetic artifacts for
each plot is determined. Answer: quantitative
◉ Quiz 1:Janie ranked school A as #1 in quality on a five point scale.
Tom ranked school A as #3 in quality on this same scale.
1 (high quality) 2 3 4 5 (low quality)
Can we say that Janie liked school A three times more than did Tom?
Answer: No, Tom liked the school less than Janie, but we do not
know by how much.
◉ Quiz 1: A type of vertical bar chart in which the categories are
plotted in the descending rank order of the magnitude of their
frequencies is called a Answer: Pareto chart
, ◉ Quiz 1: Identify the variable in the information below.
What is the average miles per gallon (mpg) for all new cars? Using
Consumer Reports, a random sample of 35 new cars gave an average
of 21.1 mpg. Answer: miles per gallon
◉ Quiz 1: You have collected data on the monthly seasonally
adjusted birth rates for the United States from 1998 to 2007. Which
of the following is the best for presenting the data? Answer: A time-
series plot.
◉ Quiz 1:Find the technique for gathering data in the study below.
An ecology class used binoculars to watch 23 turtles at Lowell Pond.
It was found that 18 were box turtles, and 5 were snapping turtles.
Answer: observational study
◉ Quiz 1: At Westgate Community College, a survey was done to
determine when students are available for class. A questionnaire
was given to a random sample of students. The instructions were to
mark each of the time categories in which they could take classes.
Many students marked more than one category. Responses from the
students in the sample indicated that 52 would take early morning
classes, 85 would take mid-morning classes, 41 would take
afternoon classes and 37 would take evening classes. Would a circle
graph be appropriate for this data? Answer: No. Since there were
