2459518
Descripción
Test por Stephanie Walker , actualizado hace más de 1 año
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Creado por Stephanie Walker
hace más de 9 años
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Pregunta 1
Pregunta
What is a main effect?
Respuesta
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The effect of a dependent variable on an independent variable.
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The effect of an independent variable on a dependent variable.
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The effect of one independent variable on a dependent variable depending on the level of another independent variable.
Pregunta 2
Pregunta
What is a one-shot case study?
Respuesta
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A pre-experimental design in which a group gets a pretest and a treatment, but no post-test.
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An experimental design in which a group gets a treatment and a post-test, but no pretest.
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A pre-experimental design in which a randomly assigned group gets a treatment and a post-test, but no pretest.
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A pre-experimental design in which a group gets a treatment and a post-test, but no pretest.
Pregunta 3
Pregunta
Why is a pretest post-test control group design ideal?
Respuesta
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Participants are randomly assigned to one of two groups: control or experimental.
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A true comparison can be done with a post-test.
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You can have more than one experimental group.
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All of the above.
Pregunta 4
Pregunta
What is the coefficient of determination?
Respuesta
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A number that signifies the strength in the relationship between two variables.
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The amount of variance that is accounted for in one variable by the other variable.
Pregunta 5
Pregunta
How do you arrive at the coefficient of determination?
Respuesta
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Square the r value.
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Square the p value.
Pregunta 6
Pregunta
If you ended up with a coefficient of determination of .12, how would you interpret this number?
Respuesta
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There is a small positive correlation between the two variables.
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The dependent variable in your study only accounted for 12% of the variance in your independent variable.
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The independent variable in your study only accounted for 12% of the variance in your dependent variable.
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The independent variable in your study accounted for 88% of the variance in your dependent variable.
Pregunta 7
Pregunta
What is the coefficient of alienation?
Respuesta
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The unexplained variance.
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The amount of variance that is accounted for in one variable by the other variable.
Pregunta 8
Pregunta
When would you use a Spearman's correlation?
Respuesta
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If one or more of your variables is normally distributed.
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If one or more of your variables is not normally distributed.
Pregunta 9
Pregunta
What is an extraneous variable?
Respuesta
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A variable other than the dependent variable that may influence the independent variable, which decreases internal validity.
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A variable other than the dependent variable that may influence the independent variable, which increases internal validity.
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A variable other than the independent variable that may influence the dependent variable, which decreases internal validity.
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A variable other than the independent variable that may influence the dependent variable, which increases internal validity.
Pregunta 10
Pregunta
How would you control for extraneous variables?
Respuesta
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Ignore unimportant variables or factors.
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Employ three levels of randomization.
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Match your samples and make sure they are as homogeneous as possible.
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Run an analysis of covariance (ANCOVA) to statistically equalize your groups.
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All of these answers are correct.
Pregunta 11
Pregunta
In a Solomon 4-group design, how many control groups are there?
Respuesta
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1
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2
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3
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0
Pregunta 12
Pregunta
In the Solomon 4-group design, how do Control Group 1 and Control Group 3 differ from one another?
Respuesta
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Control Group 1 receives a pretest and treatment, but Control Group 3 only receives a pretest.
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Control Group 1 receives a pretest and treatment, but Control Group 3 only receives the treatment.
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Control Group 1 receives a pretest but no treatment; Control Group 3 only receives the treatment.
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Control Group 1 receives a pretest but no treatment; Control Group 3 receives neither.
Pregunta 13
Pregunta
Why is it that the pretest is omitted in Control Groups 2 and 3 in a Solomon 4-group design?
Respuesta
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Because the pretest may have an unintended consequence on behavior.
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Because the pretest is only relevant in the experimental group.
Pregunta 14
Pregunta
What is a cross-sectional study?
Respuesta
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A type of non-experimental research that examines several groups of people at one point in time.
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A type of non-experimental research that examines one group of people at one point in time.
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A type of non-experimental research that examines several groups of people at more than one point in time.
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A type of non-experimental research that examines one group of people at more than one point in time.
Pregunta 15
Pregunta
Correlational research is non-experimental.
Respuesta
- True
- False
Pregunta 16
Pregunta
Cross-sectional, longitudinal, and follow-up studies are all considered what type of research?
Respuesta
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Historical
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Descriptive
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Developmental
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Correlational
Pregunta 17
Pregunta
What is a factorial design?
Respuesta
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A design with only one independent variable.
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A design with more than one independent variable.
Pregunta 18
Pregunta
If your factorial design looked like this - 2 x 2 x 2 - how many main effects would you have?
Respuesta
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8
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6
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3
Pregunta 19
Pregunta
If your factorial design looked like this - 2 x 2 x 2 - how many interactions would you have?
Respuesta
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3
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6
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8
Pregunta 20
Pregunta
In factorial designs, only main effects need to be tested for statistical significance by ANOVA.
Respuesta
- True
- False
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