Chapter 1: Review of Basic Concepts

Multiple Choice

1. A researcher uses a six-sided dice to determine group membership. The sampling method being used is:
2. random sample.
3. stratified sample.
4. convenience sample.
5. clustered sample.

Ans: a

2.The level of measurement has an absolute 0 as a meaningful value is:

1. nominal
2. ordinal
3. interval
4. ratio

Ans: d

3. The level of measurement for a 10-point pain scale where 1 is no pain and 10 is very painful is:
4. nominal
5. ordinal
6. interval
7. ratio

Ans: c

4.Likert-scaled instruments could be considered all BUT what level of measurement:

a.nominal

b.ordinal

c.interval

d.ratio

Ans:a

5.The Gaussian distribution is also known as the ____________ distribution:

1. normal
2. exponential
3. positively-skewed
4. platykurtic

Ans:a

6. Approximately two-thirds of all values in the standard normal distribution fall within how many standard deviations of the mean:

a.0

b.1

c.2

d.3

Ans:b

7. This element is not typically included in a behavioral experiment:
8. a treatment or intervention
9. assessment of an outcome.
10. random assignment
11. uncontrolled variables

Ans: d

8. The degree to which a study’s results can be replicated in real world settings is:
9. rival explanation
10. temporal precedence
11. external validity
12. internal validity

Ans: c

9. What type of analysis should be used for a between-S design with more than two levels for the independent variable group:
10. repeated measures analysis of variance
11. one-way analysis of variance
12. independent samples t-test
13. Friedman analysis of variance

Ans: b

10. A researcher has a categorical independent variable and a quantitative dependent variable. Which of the following analyses would not be appropriate:
11. paired-samples t-test
12. one-way between S analysis of variance
13. chi-square test of association
14. Wilcoxon signed-rank test

Ans: c