Appx A 13e Myers All Modules Included
Indicate the answer choice that best completes the statement or answers the question.
1. A statistically significant difference between two sample groups is NOT likely to be:
a. a reflection of differences between the populations they represent.
b. due to chance variation within and between the sample groups.
c. observed more than 5 percent of the time the groups are compared.
d. observed when the two groups are very large.
ANSWER: b
2. If half the students at Trenton College have brown eyes, which of these events is MOST probable?
a. In a class consisting of 15 students, 80 percent or more have brown eyes.
b. In a class consisting of 25 students, 80 percent or more have brown eyes.
c. In a class consisting of 50 students, 80 percent or more have brown eyes.
d. In a class consisting of 100 students, 80 percent or more have brown eyes.
ANSWER: a
3. During the past year, Yusuf and Michalis each read 4 books, but Dimitar read 10, Duante read 14, and Toni
read 24. The median number of books read by these individuals was:
a. 4.
b. 10.
c. 12.
d. 14.
ANSWER: b
4. When one reads a bar graph, it is most important for them to:
a. mentally transform the data into a normal curve.
b. identify the value of the standard deviation.
c. consider the scale labels and their range.
d. identify the correct measure of central tendency.
ANSWER: c
. Page 1
,Name: Class: Date:
Appx A 13e Myers
5. Cara has just read an article stating that 2 million people in her city live below the poverty line. Cara realizes
that this is likely an estimate, but because the article was published in a newspaper, she feels the number must
be accurate. To think about this critically, Cara should remember that:
a. an estimate indicates a lack of evidence on the reporter's part.
b. people tend to prefer big, round numbers when setting goals.
c. estimates should not be used to communicate important information.
d. the estimate may be low or high, depending on the reporter's angle.
ANSWER: d
6. Which of these is true of larger samples?
a. They are less representative.
b. They make for a more replicable study.
c. They are more variable.
d. They have larger standard deviations.
ANSWER: b
7. After calculating his students' scores on their last chemistry exam, Dr. Youtz found that the range of scores
had an extremely small standard deviation. This indicates that the:
a. test was given to a very small class of students.
b. test was a poor measure of the students' knowledge.
c. students generally performed well on the test.
d. students' scores tended to be very similar to one another.
ANSWER: d
8. For which of these distributions of scores would the median MOST clearly be a more appropriate measure
of central tendency than the mean?
a. 10, 22, 8, 9, 6
b. 12, 6, 8, 5, 4
c. 12, 15, 12, 9, 12
d. 23, 17, 19, 27, 16
ANSWER: a
. Page 2
,Name: Class: Date:
Appx A 13e Myers
9. College X has seen a jump in student enrollments, and the dean is deciding whether to build an additional
wing on an existing dorm to house the new students. Their colleague suggests asking 15 of the students in
that dorm for their opinions, but the dean would prefer to ask all 75 of the students who live there. Why is
the dean's approach more likely to be accurate?
a. Representative samples are better than biased samples.
b. Bigger samples are better than smaller samples.
c. More estimates are better than fewer estimates.
d. Descriptive statistics are more precise than inferential statistics.
ANSWER: b
10. _____ is a statement of how likely it is that a result (such as a difference between samples) occurred by
chance.
a. Standard deviation
b. Statistical significance
c. The range
d. The normal curve
ANSWER: b
11. A graphed cluster of dots, each of which represents the values of two variables, is called a:
a. replication.
b. scatterplot.
c. control group.
d. correlation coefficient.
ANSWER: b
12. The median of a distribution of scores is the:
a. most frequently occurring score.
b. difference between the highest and lowest scores.
c. arithmetic average of all the scores.
d. middle score in a distribution of scores.
ANSWER: d
. Page 3
, Name: Class: Date:
Appx A 13e Myers
13. A distribution of scores in which the mean is affected by a few extreme scores is said to be lopsided, or:
a. statistically significant.
b. extrapolated.
c. a standard deviation.
d. skewed.
ANSWER: d
14. During the last Carterville High School basketball game, the five starting players scored 10, 6, 24, 12, and 6
points, respectively. For this distribution of scores, the range is:
a. 6.
b. 10.
c. 18.
d. 24.
ANSWER: c
15. Before returning corrected exams in a history class, the professor remarks that the lowest score was 56 and
the highest score was 97. What is the range for the test scores?
a. 100
b. 153
c. 41
d. 42
ANSWER: c
16. The precision with which a sample average approximates a population average increases as the:
a. amount of variability in the sample increases.
b. amount of variability in the sample decreases.
c. mean of the sample increases.
d. mean of the sample decreases.
ANSWER: b
. Page 4
Indicate the answer choice that best completes the statement or answers the question.
1. A statistically significant difference between two sample groups is NOT likely to be:
a. a reflection of differences between the populations they represent.
b. due to chance variation within and between the sample groups.
c. observed more than 5 percent of the time the groups are compared.
d. observed when the two groups are very large.
ANSWER: b
2. If half the students at Trenton College have brown eyes, which of these events is MOST probable?
a. In a class consisting of 15 students, 80 percent or more have brown eyes.
b. In a class consisting of 25 students, 80 percent or more have brown eyes.
c. In a class consisting of 50 students, 80 percent or more have brown eyes.
d. In a class consisting of 100 students, 80 percent or more have brown eyes.
ANSWER: a
3. During the past year, Yusuf and Michalis each read 4 books, but Dimitar read 10, Duante read 14, and Toni
read 24. The median number of books read by these individuals was:
a. 4.
b. 10.
c. 12.
d. 14.
ANSWER: b
4. When one reads a bar graph, it is most important for them to:
a. mentally transform the data into a normal curve.
b. identify the value of the standard deviation.
c. consider the scale labels and their range.
d. identify the correct measure of central tendency.
ANSWER: c
. Page 1
,Name: Class: Date:
Appx A 13e Myers
5. Cara has just read an article stating that 2 million people in her city live below the poverty line. Cara realizes
that this is likely an estimate, but because the article was published in a newspaper, she feels the number must
be accurate. To think about this critically, Cara should remember that:
a. an estimate indicates a lack of evidence on the reporter's part.
b. people tend to prefer big, round numbers when setting goals.
c. estimates should not be used to communicate important information.
d. the estimate may be low or high, depending on the reporter's angle.
ANSWER: d
6. Which of these is true of larger samples?
a. They are less representative.
b. They make for a more replicable study.
c. They are more variable.
d. They have larger standard deviations.
ANSWER: b
7. After calculating his students' scores on their last chemistry exam, Dr. Youtz found that the range of scores
had an extremely small standard deviation. This indicates that the:
a. test was given to a very small class of students.
b. test was a poor measure of the students' knowledge.
c. students generally performed well on the test.
d. students' scores tended to be very similar to one another.
ANSWER: d
8. For which of these distributions of scores would the median MOST clearly be a more appropriate measure
of central tendency than the mean?
a. 10, 22, 8, 9, 6
b. 12, 6, 8, 5, 4
c. 12, 15, 12, 9, 12
d. 23, 17, 19, 27, 16
ANSWER: a
. Page 2
,Name: Class: Date:
Appx A 13e Myers
9. College X has seen a jump in student enrollments, and the dean is deciding whether to build an additional
wing on an existing dorm to house the new students. Their colleague suggests asking 15 of the students in
that dorm for their opinions, but the dean would prefer to ask all 75 of the students who live there. Why is
the dean's approach more likely to be accurate?
a. Representative samples are better than biased samples.
b. Bigger samples are better than smaller samples.
c. More estimates are better than fewer estimates.
d. Descriptive statistics are more precise than inferential statistics.
ANSWER: b
10. _____ is a statement of how likely it is that a result (such as a difference between samples) occurred by
chance.
a. Standard deviation
b. Statistical significance
c. The range
d. The normal curve
ANSWER: b
11. A graphed cluster of dots, each of which represents the values of two variables, is called a:
a. replication.
b. scatterplot.
c. control group.
d. correlation coefficient.
ANSWER: b
12. The median of a distribution of scores is the:
a. most frequently occurring score.
b. difference between the highest and lowest scores.
c. arithmetic average of all the scores.
d. middle score in a distribution of scores.
ANSWER: d
. Page 3
, Name: Class: Date:
Appx A 13e Myers
13. A distribution of scores in which the mean is affected by a few extreme scores is said to be lopsided, or:
a. statistically significant.
b. extrapolated.
c. a standard deviation.
d. skewed.
ANSWER: d
14. During the last Carterville High School basketball game, the five starting players scored 10, 6, 24, 12, and 6
points, respectively. For this distribution of scores, the range is:
a. 6.
b. 10.
c. 18.
d. 24.
ANSWER: c
15. Before returning corrected exams in a history class, the professor remarks that the lowest score was 56 and
the highest score was 97. What is the range for the test scores?
a. 100
b. 153
c. 41
d. 42
ANSWER: c
16. The precision with which a sample average approximates a population average increases as the:
a. amount of variability in the sample increases.
b. amount of variability in the sample decreases.
c. mean of the sample increases.
d. mean of the sample decreases.
ANSWER: b
. Page 4
