Select Questions

Chapter 8

1. When comparing line and bar charts, __________.

both are equally good at displaying study results

neither is as good as a table

the line chart is superior to the bar chart at showing interactions

tables are better than either the line or bar chart at showing interactions

2. The statistical test used to analyze the factorial design is called the __________.

chi-square

t test

randomization test

F test

3. In the two-factor design shown in the summary table below, there was/were __________ level(s) of Factor A, Drug.
Table
Analysis of Variance
Summary Table for Depression Scores
Source              df       F
A = Drug Th         1      1.86
B = Cog Beh Th     1     12.23*
A x B                  1       2.03
Error                30
* p < .05

4. In an experimental design, subjects receive all treatments, according to a predetermined order. The design is a __________ design.

Latin square

completely randomized

between-subjects

randomized blocks

5. Factorial designs are used when the researcher wishes to measure the effect of an independent variable __________.

on several dependent variables

on a dependent variable

as a function of the effect of at least one other dependent variable

on a dependent variable as a function of the effect of at least one other independent variable

6. In a two-factor design, the number of F tests performed is:

7. Most people thrive on a diet containing phenylalanine; only the rare people with phenylketonuria suffer brain damage because of it. This is an example of a(n):

main effect.

confounded effect.

regression.

interaction.

8. In a factorial design, subjects are matched on IQ and then one of each pair is randomly assigned to one of the treatments; the design is a __________.

randomized blocks design

Latin square design

repeated measures design

completely randomized design

9. The evidence for interactions can be seen most clearly in which of the following?

a scatterplot

a line chart

a bar chart

a table of group means

10. Experiments which test for interactions must include at a minimum __________.

two independent variables and one dependent variable

one independent variable and two dependent variables

two independent variables and two dependent variables

one independent variable and one dependent variable

11. In a between-subjects design, each subject receives __________.

only one treatment

all treatments

only one treatment order

only one treatment at one time and other treatments at later times to prevent carryover effects

12. The design that allows the researcher to test for interactions between variables is the __________.

between-subjects design

factorial design

Latin square design

within-subjects design