Statistical Methods Final Exam 2026
Questions and Answers Graded A+
Interaction Effect - Correct answer-When the effect of one IV on your DV varies as
a function of the other IV.
Types of factorial design - Correct answer-Between - Subject
Repeated Measures
Mixed Factorial Design
Factorial Designs have... - Correct answer-Two Independent Factors (or more)
Between subject factorial design - Correct answer-Can only be one of the options,
cannot be multiple
Repeated measures factorial design - Correct answer-Is a variable consistently
measured
Mixed factorial design - Correct answer-Consists of between subject variable and
repeated measures variable.
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,Naming an ANOVA - Correct answer-Factorial designs are referred to by the
number of IVs and the number of levels of each IV. A design with two IVs is said
to be an nXm (read n by m) design.
Counterbalancing - Correct answer-Randomizing what conditions people take first
(the order of the conditions). An effort to reduce pattern effects. Use it when you
are using a repeated order design.
Order Effects - Correct answer-Completely unrelated to your variable.
Performance on something is impacted by the order you take something in.
Factorial ANOVAS can answer at least three questions. - Correct answer-1- Is there
an effect on the first IV?
2- Is there an effect on the second IV?
3- Are the effects of the two IVs independent of each?
Factorial ANOVAs have - Correct answer-At least two IVs (2 or more) The more
IVs the more complex it gets. (naming them such as 2x3)
Main effect - Correct answer-A main effect is observed when an independent
variable significantly influences a dependent variable.
It indicates a direct relationship between the two variables being studied. (study bar
graphs)
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, Just because you have one main effect does not mean you have... - Correct answer-
An interaction
Why do we not just use separate t - tests for interaction and main effects? - Correct
answer-Because if you don't use a Factorial ANOVA you miss the picture.
Example of Interaction effect but not main effect - Correct answer-Trends are
difference but no numerical difference
Can you have an Independent Variable with one level for factorial designs -
Correct answer-nooo
Example of main effect but not an interaction - Correct answer-If men go to the
doctor one less time than women both in undergrads and grads. (they go one less
times in both circumstances)
What are z-tests comparing - Correct answer-Comparing data to an existing
statistic
Bivariate Correlation - Correct answer-It is a way of measuring the extent to which
two variables are related. It measures the pattern of responses across variables.
(You need continuous data for IVs and DVs)
What two things do correlation coefficients (r) tell you? - Correct answer-Strength
and Direction:
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Questions and Answers Graded A+
Interaction Effect - Correct answer-When the effect of one IV on your DV varies as
a function of the other IV.
Types of factorial design - Correct answer-Between - Subject
Repeated Measures
Mixed Factorial Design
Factorial Designs have... - Correct answer-Two Independent Factors (or more)
Between subject factorial design - Correct answer-Can only be one of the options,
cannot be multiple
Repeated measures factorial design - Correct answer-Is a variable consistently
measured
Mixed factorial design - Correct answer-Consists of between subject variable and
repeated measures variable.
©COPYRIGHT 2025,ALL RIGHTS RESERVED 1
,Naming an ANOVA - Correct answer-Factorial designs are referred to by the
number of IVs and the number of levels of each IV. A design with two IVs is said
to be an nXm (read n by m) design.
Counterbalancing - Correct answer-Randomizing what conditions people take first
(the order of the conditions). An effort to reduce pattern effects. Use it when you
are using a repeated order design.
Order Effects - Correct answer-Completely unrelated to your variable.
Performance on something is impacted by the order you take something in.
Factorial ANOVAS can answer at least three questions. - Correct answer-1- Is there
an effect on the first IV?
2- Is there an effect on the second IV?
3- Are the effects of the two IVs independent of each?
Factorial ANOVAs have - Correct answer-At least two IVs (2 or more) The more
IVs the more complex it gets. (naming them such as 2x3)
Main effect - Correct answer-A main effect is observed when an independent
variable significantly influences a dependent variable.
It indicates a direct relationship between the two variables being studied. (study bar
graphs)
©COPYRIGHT 2025,ALL RIGHTS RESERVED 2
, Just because you have one main effect does not mean you have... - Correct answer-
An interaction
Why do we not just use separate t - tests for interaction and main effects? - Correct
answer-Because if you don't use a Factorial ANOVA you miss the picture.
Example of Interaction effect but not main effect - Correct answer-Trends are
difference but no numerical difference
Can you have an Independent Variable with one level for factorial designs -
Correct answer-nooo
Example of main effect but not an interaction - Correct answer-If men go to the
doctor one less time than women both in undergrads and grads. (they go one less
times in both circumstances)
What are z-tests comparing - Correct answer-Comparing data to an existing
statistic
Bivariate Correlation - Correct answer-It is a way of measuring the extent to which
two variables are related. It measures the pattern of responses across variables.
(You need continuous data for IVs and DVs)
What two things do correlation coefficients (r) tell you? - Correct answer-Strength
and Direction:
©COPYRIGHT 2025,ALL RIGHTS RESERVED 3
