This document contains 20 multiple choice questions about statistics, data analysis, and research methods. The questions cover topics such as converting fractions to percentages, comparing measurement scales, interpreting poll results, and identifying appropriate sample types and study designs. For each question, the document provides the question text and 4 possible answer choices, with the correct answer indicated for some questions.

1. Question 11 of 20 (correct)
Convert 5/16 to a percent.
A. 31.25%
B. 0.3125%
C. 3.125%
D. 0.03125%
Question 12 of 20
Which is the best fertilizer for Mr. Jimenez’ backyard grass?
Select the type of study most appropriate to the question.
A. Experimental
B. Experimental blinded
C. Case-controlled observational
D. Observational
Question 13 of 20 (correct)
5.0 Points
Compared with a metric scale that has grams as the smallest
division, a scale with milligrams as the smallest division:

2. A. will guarantee measurements that are more accurate, but not
necessarily more precise.
B. will guarantee measurements that are more precise and more
accurate.
C. will guarantee measurements that are more precise, but not
necessarily more accurate.
D. will not guarantee measurements that are more accurate or
more precise.
Question 14 of 20 (correct)
5.0 Points
Suppose that the cost of a statistics text was $50 in 1985 and is
$100 in 2000. What is the ‘Statistics Text Index’ number,
rounded to the nearest tenth, for the 2000 edition with the 1985
price as the reference value?
A. 20.0
B. 200.0
C. 50.0
D. 2.0
Question 15 of 20
5.0 Points
The size of an e-mail file is stated as 210 kB, but the file size is
actually 220.5 kB. What is the absolute error?

3. A. 5%
B.10%
C. 10.5 kB
D. -10.5 kB
Question 16 of 20
5.0 Points
The results of a poll are stated as follows: “Based on a survey
of 156 randomly selected students, 90% of the student body of
2870 students agree that no student should have to take final
exams in two consecutive exam periods”. If 2578 students
actually agree, then what is the absolute error in the reported
result?
A. 5 students
B. 287 students
C. 0.17%
D. 292 students
Question 17 of 20 (correct)
5.0 Points
Compared with a stopwatch that gives readings as --. - seconds,
a stopwatch that gives readings as --. - - seconds is:
A. more accurate, but not necessarily more precise

4. B. more precise and more accurate.
C. not necessarily more precise or more accurate.
D. more precise, but not necessarily more accurate.
Question 18 of 20 (correct)
5.0 Points
Temperatures in degrees Fahrenheit of the ocean at various
depths:
A. Ratio
B. Interval
C. Ordinal
D. Nominal
Questions 19 0f 20
A homeowner put a brand-name fertilizer/weed killer on half of
his lawn and a generic fertilizer/weed killer on the other half.
After three weeks, the generic side had 1 weed per square
meter, the other side 1.7 weeds per square meter. The generic
side required two mowings in the 3 weeks, the brand-name side
one. The homeowner concluded that the generic was superior to
the brand-name. Determine which evaluation guideline applies
best in questioning the results of the described study.
A. Consider possible confounding variables.
B. Consider the sample.

5. C. Consider the type of study.
D. Consider the source.
Question 20 of 20
5.0 Points
One month before a recall election, a poll of 500 Wisconsin
voters showed that 46% planned to vote for the Democratic
challenger Tom Barrett and 45% planned to vote for Republican
Governor Scott Walker. Undecided voters constituted another
9%. The margin of error was 5 percentage points. What
conclusion can you draw from this poll?
A. Barrett will win the election.
B. Walker can’t get over 50% of the votes.
C. The race is too close to call.
D. No one will win.
Question 1 of 20
Two statements are given below. Select the statement for which
a ratio of the measurements is meaningful. State “Neither” or
“Both” if appropriate.
1 - Kasheta ran the race in 22.3 sec, and Louisa ran the same
race in 26.4 sec.
2 - Juan gets out of school at 2:45 PM, and Aito gets out of
school at 3:15 PM.

6. A. Kasheta ran the race in 22.3 sec, and Louisa ran the same
race in 26.4 sec.
B. Neither
C. Both
D. Juan gets out of school at 2:45 PM, and Aito gets out of
school at 3:15 PM.
Question 2 of 20
A poll was taken of a random sample of 1189 college students.
Of these students, 789 reported that they had a drinking binge
(more than 10 drinks in an evening) in the past month. Select
the most believable conclusion.
A. About 66.358% of college students indulged in binge
drinking last month.
B. Of the 23,456,321 college students in the country,
15,565,212 indulged in binge drinking last month.
C. About 65% of college students indulge in binge drinking.
D. About 65% of college students indulged in binge drinking in
the past month.
Question 3 of 20 (correct)
5.0 Points
Which data provide the answer to the question: “How frequently
can a student at Eureka College be expected to study more than

7. three hours a day?”
A. Of 100 students surveyed, 43 reported that they study at least
three hours a day twice a week.
B. Of 100 students surveyed, 43 reported that they have studied
at least three hours a day.
C. Of 100 students surveyed, 43 reported that they studied at
least three hours a day twice last week.
D. Of 100 students surveyed, 43 reported that they intend to
study at least three hours a day next week.
Question 4 of 20 (correct)
5.0 Points
Humanities majors spend an average of $115 per course on
books.
Mathematics majors spend an average of $70 per course on
books. What is
the percent difference between the two amounts relative to the
amount
for mathematics majors (round to the nearest percent)?
A. 64%
B. 39%
C. 50%
D. 42%

8. Question 5 of 20
5.0 Points
Soft drink sizes: small, medium, large:
A. Qualitative, nominal
B. Quantitative, ordinal
C. Quantitative, ordinal, discrete
D. Qualitative, ordinal
Question 6 of 20
5.0 Points
Determine which of the four levels of measurement is most
appropriate for the statement below.
Ages of survey respondents.
A. Ratio
B. Interval
C. Ordinal
D. Nominal
Question 7 of 20 (correct)
Convert 5.65 to a percent.
A. 565%

9. B. 5.65%
C. 0.565%
D. 56.5%
Question 8 of 20 (correct)
5.0 Points
The father of a junior high school student wants to determine
the most popular book among junior high students. Select the
sample with the least potential bias.
A. A randomly selected group of 10 book sellers
B. A randomly selected group of 30 junior high students
C. A randomly selected group of 30 junior high students leaving
the public library
D.The group of 30 junior high students attending the birthday
party of the
researcher’s child
Question 9 of 20
5.0 Points
In a survey of 80 high school football players who committed to
play in the Division III CCIW conference, 64 said that they
would work out in their high school weight rooms in the
summer before college. The margin of error for the survey was
6%. A census of all CCIW football players (not just freshmen)
showed that 59% worked out at their high schools. One can
conclude that:
A. the subjects were less than forthcoming in their responses to
the survey.

10. B. the sample was not representative of the population.
C. there must have been an error in the determination of the
margin of error.
D. the census results are consistent with the confidence interval
of the study.
Question 10 of 20 (correct)
5.0 Points
A sample consists of every 49th student from a group of 496
students. Identify the type of sampling used.
A. Systematic
B. Cluster
C. Convenience
D. Random