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PSY 3020 Final Review Flashcards | StudBud
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PSY 3020 Final Review
PSY 3020 Final Review
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1
In the simple linear regression formula, the _____ is the predicted value for
Y
when
X
is equal to 0.
residual
slope
y-intercept
standard error
2
Jeff asks a sample to take his new test twice, 3 months apart. What type of reliability is he assessing?
Alternative (parallel) forms reliability
Internal consistency reliability
Cronbach's alpha
Test-retest reliability
3
How many different experimental groups (cells) are in a 3 x 2 x 2 experiment?
12
3
7
6
4
A correlation coefficient is a statistic that quantifies:
the relationship between two variables.
the number of independent variables in an experiment.
how much variance there is in a distribution.
the difference between two factors.
5
In a study of how gender and age affect impressions of professors, which describes a main effect of gender?
Only older male professors are seen as more competent.
Older female professors are seen as more competent than younger ones.
Older professors are seen as more competent than younger professors.
Men are seen as more competent than women.
6
___ refers to the means of the rows and columns in a table that shows the cells of a study with a two-way ANOVA design.
marginal means
standard error of the mean
grand mean
sample means
7
Which graph, if either, has a smaller standard error of the estimate?
Graph A (on the left)
Graph B (on the right)
It cannot be determined from the image
They have the same standard erro
8
Which of the following is an accurate null hypothesis for correlations?
H0: μ1 = μ2
H0: ρ ≠ 0
H0: ρ = 0
H0: μ = 0
9
_____ refers to the tendency of scores that are particularly high or low to drift toward the mean over time.
range restriction
standard error of the estimate
regression to the mean
multicollinearity
10
The regression line is also known as the:
correlation line
intercept line
Beta line
line of best fit
11
People eat more when they combine sweet and salty snacks than when they eat either snack alone. This is a(n) ___ effect.
crossover (antagonistic) qualitative interaction
suppressive (buffering) quantitative interaction
main effect
synergistic (enhancing) quantitative interaction
12
How many
F
statistics are produced in a two-way ANOVA?
2
3
6
4
13
What is wrong with the survey item: “To what extent to do you enjoy watching movies and TV shows?”
It contains technical language.
It uses uncommon vocabulary.
It is double-barreled.
It is forced-choice.
14
Which of the following is an example of a directional (one-tailed) hypothesis?
Self-esteem is related to depression.
Women are more depressed than men.
Social media use causes changes in self-esteem.
15
You find that people who are taller earn more money. What can you conclude about height and income?
There is a significant difference between the two variables.
They are negatively correlated.
There is no correlation between the two variables.
They are positively correlated.
16
When a test accurately measures what it is intended to measure, we say that the test is:
reliable
unbiased
consistent
valid
17
If two variables are negatively correlated, low scores on one variable would be associated with ___ scores on the other
positive
high
low
negative
18
You measure aggression in children. Years later you correlate the score with actual violent crimes. Which validity?
Convergent (construct)
Discriminant (construct)
Face (content)
Predictive (criterion-related)
19
What type of interaction, if any, does the figure best illustrate?
a quantitative (enhancing or buffering) interaction
a qualitative (crossover) interaction
a parallel interaction
no interaction
20
The standardized regression coefficient (β) for each variable in a regression equation is the __ for that predictor.
intercept
slope
constant
standard error
21
A study evaluated the effects of gender and marital status on stress. Which type of ANOVA should you use?
within-groups ANOVA
one-way ANOVA
between-groups ANOVA
two-way ANOVA
22
What type of interaction, if any, does the figure below BEST illustrate?
a qualitative (crossover) interaction
a quantitative (enhancing or buffering) interaction
a parallel interaction
no interaction
23
The figure depicts _____ correlation.
a negative
no
a curvilinear
a positive
24
Which of the following correlations reflects the strongest relationship between variables?
–0.72
0.58
0.12
1.05
25
Identify the marginal mean for men.
9
6
8
7
26
The amount of variance explained in the criterion by all the predictors in a multiple regression model is __.
r2
Ŷ
R2
β2
