To determine whether the test statistic of one- factor ANOVA is statistically significant, it can be compared to a critical value. What are the two needed information to determine the critical value? O A. sample size and number of groups. B. Total variation and number of factors. C. None of these O D. MSE and MSX E. mean and standard deviation

Which statistical method can be considered as an extension of One-Way ANOVA to incorporate a "covariate"? a. two way ANOVA b. ANCOVA c. Normality Testing d. Covariance

What conditions are necessary in order to use a one-way ANOVA test? Which conditions below are necessary? Select all that apply. □ □ □ A. The sample sizes must be equal. B. Each population must have the same variance. C. There must be at least 3 samples. D. The sample must be randomly selected from the same population. E. The samples must be randomly selected from a normal, or approximately normal, population. F. The samples must be independent of each other.

Use the following ANOVA table to answer the question. Source DF SS Regression Error Total 355.22 76.38 431.60 MS 177.61 10.91 7 What is the value of SSR? 76.38 50.56 431.60 355.22

ARE THE FOLLOWING DATA EQUALLY DISTRIBUTED ACROSS CATEGORIES? TEST AT.05 SIGNIFICANCE LEVEL. ABICID 35 15 10 45 WHAT STATISTICAL TEST WAS USED? OBSERVED VALUE ? CRITICAL VALUE? ACCEPT OR REJECT NULL? DO THE GROUPS DIFFER SIGNIFICANTLY?