Analysis of Variance

Topic Page

Questions

• What is the difference between "between-groups" variability and "within groups" variability?
• What is ANOVA?
• What is a fixed effects model?
• What is a latent variable?
• When should you use a random effects model?
• What is a partition of sums of squares?
• What is an F-test?
• What is an F-test for the equality of variances?
• What does an F-test measure?
• What assumptions does an F-test make?
• What is a one way ANOVA?
• What is a two way ANOVA?
• When should an F-test be used?
• What does ANOVA measure?
• What is MANOVA?
• How does MANOVA differ from MANOVA?
• What is ANOVA used for?
• In an ANOVA, what does F=1 mean?
• What is an F-test for the equality of variances?
• What does a higher F-statistic mean?
• What is a lack of fit sum of squares analysis?
• If you are comparing subgroups of a data set, how can you determine if the variance between subgroups is significant?
• How do you derive the variance of a Gaussian distribution?
• With cash = $2950 and accounts payable at $11,900, what's the cash ratio?
• How do you run an ANOVA test in Excel?
• What is the difference between a one-way ANOVA and two-way ANOVA test?
• In a one-way ANOVA, if the test is conducted and the null hypothesis is rejected, what does this indicate?
• How can you use the ANOVA to reject a null hypothesis? How is it related to the F-critical value?
• What's the difference between ANOVA and multiple regression?
• How do I figure out which test to use for this following set of data?
• Is the F test used for testing the difference in two population variances always a one tailed test? Why or why not?
• What must you know in order to perform an f-test?
• How do you create statistical hypotheses for an ANOVA test?
• How would you explain the analysis of variance?
• At the 0.05 significance level, can a physician conclude that there is a difference in the mean amount of weight loss among the three diets?