PSY 231 FINAL EXAM

TRUE or FALSE? The goal of an experimental design is to assess a causal hypothesis.

TRUE or FALSE? The larger the t-value, the smaller the p-value.

TRUE or FALSE? Within inferential statistics, you assume the null hypothesis is true in the population.

TRUE or FALSE? You should assume the dependent variable is nominal.

TRUE or FALSE? Repeated measures ANOVA compares means of dependent groups defined by a single independent variable

TRUE or FALSE? Paired-samples t-test compares 2 means in a within-subjects design

Marginal means tell us about what?

All of the following apply to the alpha level EXCEPT:

Common ways to report your results include all of the following EXCEPT:

An interaction occurs in the presence of what kind of effect?

TRUE or FALSE? Quasiexperimental design is when participants are selected from preexisting groups (no random assignment)

What t-test compares two means in a between-subjects design?

TRUE or FALSE? The null hypothesis is when there is a difference between the population and the sample

What is degrees of freedom (df)?

TRUE or FALSE? One-Way ANOVA compares means of independent groups defined by a single independent variable

What is the null hypothesis for a One-Way ANOVA?

TRUE or FALSE? The results section goes after the discussion section in an APA style paper.

TRUE or FALSE? Significance levels are NOT affected by the sample size.

IF you have three or more groups/conditions, which test do you run?

TRUE or FALSE? One sample t-tests compare a single mean to some meaningful value

TRUE or FALSE? External Validity is when the study can be generalized to other settings and people.

What is a large Cohen's D effect size?

TRUE or FALSE? Higher F Ratios indicate greater mean differences across groups.

TRUE or FALSE? Meta-analysis is the analysis of analyses

What is the probability of obtaining our effect given a null population?

TRUE or FALSE? Cohen's D is a standardized measure of how strong a mean difference is.

Which ANOVA compares means of dependent groups defined by a single independent variable?

TRUE or FALSE: A one-sample t-test is used to determine which group means differ from other group means

The order of the method section is:

TRUE or FALSE? 2-Way (Factorial) ANOVA compares means of groups defined by 2 IVs

What is the goal of significance testing?

TRUE or FALSE? Independent samples t-tests compare 2 means in a between subjects design.