PSYC 210 Final Exam Review NEWEST 2026-2027
ACTUAL EXAM WITH COMPLETE 150
QUESTIONS AND CORRECT DETAILED
ANSWERS (100% VERIFIED ANSWERS)
ALREADY GRADED A+ PROFESSOR VERIFIED
A significant interaction between IVs means that: - CORRECT ANSWER: The effect of one IV
depends on a second IV
Another weakness of oneway ANOVA is that it: - CORRECT ANSWER: Doesn't tell us which
means differ
As your observed F gets larger, what is more likely to happen? - CORRECT ANSWER:
Differences between groups is more pronounced than within
Broadly speaking, r-squared can be interpreted as:
Answer streak 3 - CORRECT ANSWER: proportion of variance accounted for by your
predictor(s)
Conducting a oneway ANOVA with only two groups is actually the same as conducting a: -
CORRECT ANSWER: T test
Factorial ANOVA divides variance into between and within group variance. What else does it
do? - CORRECT ANSWER: Divides up between group variance
Factorial ANOVA handles multiple IVs. In doing so, it allows us to examine: - CORRECT
ANSWER: Variance due to error (chance)
The unique effect of each IV
The interaction of two IVs on an outcome
,Given that weakness, what do we do with more than two groups? - CORRECT ANSWER:
Conduct an ANOVA
How does ANOVA work? - CORRECT ANSWER: It uses the F distribution
It analyzes variance
It tells us which differences are group and which are error
It partitions variance into meaningful parts
How would you interpret a 95% confidence interval ranging from 3.5 to 6.8? - CORRECT
ANSWER: We are 95% sure our true population mean is between those #s
If you get an observed F value close to one, what would you conclude? - CORRECT ANSWER:
Differences between groups are about the same as within
If your observed F isn't bigger than your critical F, what can you conclude? - CORRECT
ANSWER: Fail to reject the null hypothesis
There are no group differences
In a 2-way analysis of variance, when we say we have a MAIN EFFECT, we mean that: -
CORRECT ANSWER: The marginal means for the levels of Factor A after collapsing over
Factor B are significantly different from one another
In a 2-way analysis of variance, when we say we have an INTERACTION, we mean that: -
CORRECT ANSWER: The effect of one independent variable on a dependent variable differs as
a function of a second independent variable
In relation to a simple analysis of variance, which of the following statements is NOT true? -
CORRECT ANSWER: MStotal = MSbetween groups + MSwithin groups
, In statistics, we talk about two types of interactions. What are they? - CORRECT ANSWER:
Spreading and crossover
MSwithin groups is an estimate of error variance: - CORRECT ANSWER: under all
circumstances
Multiple regression allows us to______________. - CORRECT ANSWER: examine the effect of
multiple predictors.
Oneway ANOVA is great! But it, too, has a major weakness. What is this weakness? -
CORRECT ANSWER: It can only handle one independent variable
Pairwise comparisons made after finding that F is significant and used to determine which pairs
of means are significantly different are known as: - CORRECT ANSWER: post hoc tests
Planned comparisons/contrasts are often preferred because they: - CORRECT ANSWER: Are
targeted, theoretical examinations of specific means
Regression analysis actually uses a _____ test to determine the significance of each predictor. -
CORRECT ANSWER: t
t-tests are great! But they have a major weakness. What is it? - CORRECT ANSWER: We can
only compare two groups
The "squared family" of effect size tells us: - CORRECT ANSWER: the proportion of variance
in the outcome associated with IV
The F-distribution is different from the Z and t distributions in that it: - CORRECT ANSWER:
only contains positive numbers
ACTUAL EXAM WITH COMPLETE 150
QUESTIONS AND CORRECT DETAILED
ANSWERS (100% VERIFIED ANSWERS)
ALREADY GRADED A+ PROFESSOR VERIFIED
A significant interaction between IVs means that: - CORRECT ANSWER: The effect of one IV
depends on a second IV
Another weakness of oneway ANOVA is that it: - CORRECT ANSWER: Doesn't tell us which
means differ
As your observed F gets larger, what is more likely to happen? - CORRECT ANSWER:
Differences between groups is more pronounced than within
Broadly speaking, r-squared can be interpreted as:
Answer streak 3 - CORRECT ANSWER: proportion of variance accounted for by your
predictor(s)
Conducting a oneway ANOVA with only two groups is actually the same as conducting a: -
CORRECT ANSWER: T test
Factorial ANOVA divides variance into between and within group variance. What else does it
do? - CORRECT ANSWER: Divides up between group variance
Factorial ANOVA handles multiple IVs. In doing so, it allows us to examine: - CORRECT
ANSWER: Variance due to error (chance)
The unique effect of each IV
The interaction of two IVs on an outcome
,Given that weakness, what do we do with more than two groups? - CORRECT ANSWER:
Conduct an ANOVA
How does ANOVA work? - CORRECT ANSWER: It uses the F distribution
It analyzes variance
It tells us which differences are group and which are error
It partitions variance into meaningful parts
How would you interpret a 95% confidence interval ranging from 3.5 to 6.8? - CORRECT
ANSWER: We are 95% sure our true population mean is between those #s
If you get an observed F value close to one, what would you conclude? - CORRECT ANSWER:
Differences between groups are about the same as within
If your observed F isn't bigger than your critical F, what can you conclude? - CORRECT
ANSWER: Fail to reject the null hypothesis
There are no group differences
In a 2-way analysis of variance, when we say we have a MAIN EFFECT, we mean that: -
CORRECT ANSWER: The marginal means for the levels of Factor A after collapsing over
Factor B are significantly different from one another
In a 2-way analysis of variance, when we say we have an INTERACTION, we mean that: -
CORRECT ANSWER: The effect of one independent variable on a dependent variable differs as
a function of a second independent variable
In relation to a simple analysis of variance, which of the following statements is NOT true? -
CORRECT ANSWER: MStotal = MSbetween groups + MSwithin groups
, In statistics, we talk about two types of interactions. What are they? - CORRECT ANSWER:
Spreading and crossover
MSwithin groups is an estimate of error variance: - CORRECT ANSWER: under all
circumstances
Multiple regression allows us to______________. - CORRECT ANSWER: examine the effect of
multiple predictors.
Oneway ANOVA is great! But it, too, has a major weakness. What is this weakness? -
CORRECT ANSWER: It can only handle one independent variable
Pairwise comparisons made after finding that F is significant and used to determine which pairs
of means are significantly different are known as: - CORRECT ANSWER: post hoc tests
Planned comparisons/contrasts are often preferred because they: - CORRECT ANSWER: Are
targeted, theoretical examinations of specific means
Regression analysis actually uses a _____ test to determine the significance of each predictor. -
CORRECT ANSWER: t
t-tests are great! But they have a major weakness. What is it? - CORRECT ANSWER: We can
only compare two groups
The "squared family" of effect size tells us: - CORRECT ANSWER: the proportion of variance
in the outcome associated with IV
The F-distribution is different from the Z and t distributions in that it: - CORRECT ANSWER:
only contains positive numbers
