QUANTITATIVE METHODS
FINAL EXAM
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,Question 1
Given a data set with a standard deviation of 7 and a range of 60, you should conclude that the distribution is
A. platykurtic
B. leptokurtic
C. mesokurtic
D. skewed
Correct Answer
B. leptokurtic
Question 2
If a researcher asks subjects to identify their sexual orientation as either heterosexual, homosexual, or bisexual, sexual
orientation is being measured on an ordinal level.
A. True
B. False
Correct Answer
B. False
Question 3
In a sample of high school runners' times in the 1600 meters, the mode was 4:50, the mean was 4:35, and the median
was 4:42. What can we say about the distribution?
A. It's negatively skewed
B. It's positively skewed
C. It's normal (not skewed)
D. Nothing - the numbers don't allow us to say anything about the form of the distribution.
Correct Answer
A. It's negatively skewed
Question 4
In a single-sample t-test, as the sample SD increases, the size of the obtained t-value ____, making it ______ likely to
reject the null hypothesis.
A. increases; more
B. increases; less
C. decreases; more
D. decreases; less
Correct Answer
D. decreases; less
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, Question 5
In estimating the standard error of the mean, we use the sample SD, but then divide it by the square root of N-1
instead of N. Why?
A. The sample SD is a biased estimate, consistently overestimating the population SD
B. The sample SD is a biased estimate, consistently underestimating the population SD
C. Dr. Kilianski and the text author say to do it that way.
D. An uppercase N has an inflated ego, and needs a correction factor to induce some humility.
Correct Answer
B. The sample SD is a biased estimate, consistently underestimating the population SD
Question 6
In experimental research, the dependent variable represents the cause, and the independent variable represents the
effect.
True
False
Correct Answer
False
Question 7
Inferential statistics are referred to as 'inferential' because they are used to draw conclusions about ___ from ___.
A. populations; samples
B. samples; populations
C. independent variables; dependent variables
D. dependent variables; independent variables
Correct Answer
A. populations; samples
Question 8
Only if the researcher manipulates an independent variable can a study be considered an experiment.
True
False
Correct Answer
True
Question 9
The average variation from the mean in a set of measurements in a sample is the conceptual definition of the
A. interquartile range
B. standard deviation.
C. variance.
D. standard error of the mean.
Correct Answer
B. standard deviation.
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FINAL EXAM
65+ (Latest 2025-2026 Edition) 100%
Verified Q&A + Answer Key Solutions
100% Guarantee Pass
✓ This Exam contains: Quantitative Methods Final Exam
✓ 100% Accurate Questions and Answers
✓ 100% Guarantee Pass - Verified by Experts
✓ Each Question Includes The Correct Answer
✓ Expert-Verified
Trusted by thousands of students and professionals worldwide Page 1 of 17
,Question 1
Given a data set with a standard deviation of 7 and a range of 60, you should conclude that the distribution is
A. platykurtic
B. leptokurtic
C. mesokurtic
D. skewed
Correct Answer
B. leptokurtic
Question 2
If a researcher asks subjects to identify their sexual orientation as either heterosexual, homosexual, or bisexual, sexual
orientation is being measured on an ordinal level.
A. True
B. False
Correct Answer
B. False
Question 3
In a sample of high school runners' times in the 1600 meters, the mode was 4:50, the mean was 4:35, and the median
was 4:42. What can we say about the distribution?
A. It's negatively skewed
B. It's positively skewed
C. It's normal (not skewed)
D. Nothing - the numbers don't allow us to say anything about the form of the distribution.
Correct Answer
A. It's negatively skewed
Question 4
In a single-sample t-test, as the sample SD increases, the size of the obtained t-value ____, making it ______ likely to
reject the null hypothesis.
A. increases; more
B. increases; less
C. decreases; more
D. decreases; less
Correct Answer
D. decreases; less
Trusted by thousands of students and professionals worldwide Page 2 of 17
, Question 5
In estimating the standard error of the mean, we use the sample SD, but then divide it by the square root of N-1
instead of N. Why?
A. The sample SD is a biased estimate, consistently overestimating the population SD
B. The sample SD is a biased estimate, consistently underestimating the population SD
C. Dr. Kilianski and the text author say to do it that way.
D. An uppercase N has an inflated ego, and needs a correction factor to induce some humility.
Correct Answer
B. The sample SD is a biased estimate, consistently underestimating the population SD
Question 6
In experimental research, the dependent variable represents the cause, and the independent variable represents the
effect.
True
False
Correct Answer
False
Question 7
Inferential statistics are referred to as 'inferential' because they are used to draw conclusions about ___ from ___.
A. populations; samples
B. samples; populations
C. independent variables; dependent variables
D. dependent variables; independent variables
Correct Answer
A. populations; samples
Question 8
Only if the researcher manipulates an independent variable can a study be considered an experiment.
True
False
Correct Answer
True
Question 9
The average variation from the mean in a set of measurements in a sample is the conceptual definition of the
A. interquartile range
B. standard deviation.
C. variance.
D. standard error of the mean.
Correct Answer
B. standard deviation.
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