Question 1 2.5 pts Interpretation of an ANCOVA is more problematic when: O The IV has more than two levels O Assignment to groups is not random The covariate is a random variable The covariate is a pre-treatment measure of the DV Question 2 2.5 pts Which of the following is an assumption of ANCOVA? O There should be a reasonable correlation between the covariate and dependent variable O Homogeneity of regression slopes O Covariates must be measured prior to interventions (independent variable) O All of the above D Question 3 2.5 pts What does an analyses of covariance explore? Outcomes before accounting for other variables that may be related to that outcome Outcomes after accounting for other variables that may be related to that outcome. " The amount of variance in the DV that can be explained by the IV/s. Two or more 'parametric' dependent variables (DVs) across one or more between-group independent variables (IVs)Question 4 2.5 pts What is an ANCEVA? C) An analysis where a categorical [W outcome is assessed across one or more Ws, controlling for one or more covariates D An analysis where a more than one [W mrtcorne is assessed across one or more Iv, controlling for one or more covariates it An analysis where a single dependent variable [DU] outcome is assessed across one or more independent variables {IVs}, controlling for one or more oovariates D None of the above Question 5 2.5 pts What should an ANEQVA. do to the error variance? IE Reduce it D Nothing Ci lncreaseit ID None of the above Question 5 2.5 pts The primary goal of analysis of covariance {ANCEVA} is to: C: control for treatment differences to determine if participant characteristics are statistically different. LEI determine differences among treatment groups while controlling for or removing the effects of some participant characteristics. D increase the statistical power of experimental designs by increasing the error variance. D measure the differences in some participant charactelistic afterthe experiment has been conducted. Question 7 2.5 pts One of the benefits of the ANCOVA is that the covariate can be used to measure/control for an extraneous variable. O True O False Question 8 2.5 pts The ANCOVA is able to adjust the means of the dependent variables to what they would be if all participants scored equally on the covariate. True O False Question 9 2.5 pts The ANCOVA by nature always indicates causation. O True O False Question 10 2.5 pts An "legitimate" ANCOVA requires.... O a) Random assignment O b) A covariate that affects the DV O c) An assumption of normality O All of the above O Only a and c O Only a and b