1.) [DA2] Multiple Choice. Answer: Analysis of variance is a statistical method of comparing the of several populations. a. Standard deviations b. Variances c Means d. Proportions e None of the above 2.) [DA2] Multiple Choice. Answer: To determine whether the test statistic of ANOVA is statistically significant, it can be compared to a critical value. What two pieces of information are needed to determine the critical value? a. Sample size. number of groups b. Mean. sample standard deviation 0. Expected frequency, observed frequency d. Mean square treatment, mean square error 3.) [DA2] Multiple Choice. Answer: Which of the following is an assumption of one-way ANOVA comparing samples from three or more experimental treatments? a. All the response variables within the populations follow a normal distribution. b. The samples associated with each population are randomly selected and are independent from all other samples. c. The response variable within each of the populations have equal variances. d. All of the above. 4.) [DA2] Describe in what kind of scenarios would you use the chi-square test of independence vs. Pearson correlation vs. one-way analysis of variance? 1.) [DA3] Multiple Choice. Answer: _ ANOVA tests use which of the following distributions? a. z b. chi-square c. t d. F e . R 2 2.) [DA3] Multiple Choice. Answer: Which of the following statistical concepts is used to test differences in the means for more than two independent variables? a. Pearson correlation b. Chi-square test c. Confidence interval d. Analysis of variance e. None of the above 3.) [DA3] Multiple Choice. Answer: A researcher measured the same group of people's physiological reactions while watching horror films and compared them to when watching comedy films, and a documentary about wildlife. The resulting data were normally distributed. What test should be used to analyze the data? a. One-way ANOVA b. Multi-factor ANOVA C . Repeated-measures ANOVA d. None of the above e. All of the above 4.) [DA2] Multiple Choice. Answer: In a one-way ANOVA, which of the following statements is correct? a. An interaction is present b. An interaction can be tested C. There is no interaction d. There are multiple interactions e. None of the above is correct 5.) [DA2] Multiple Choice. Answer: How many dependent variables does a two-way ANOVA have? a. One . Two C. Three d. Four . There is not enough information to answer this