1. Distinguish between the standard deviation and the standard error (standard deviation of the mean). You should answer with both an equation relating the two and in words explaining the variability of sample means as opposed to the variability of the original data.

2.State the null and alternate hypotheses for a one-way ANOVA. (Express H₀ and Hain symbolic form, as much as possible.

3.Briefly describe the three general properties of a data set of ordered pairs (x,y) that are explained by the Pearson correlation coefficient, r.

4.When should you use analysis of covariance (ANCOVA)? In what way does the covariate itself influence this decision?

5.Describe the data situation that should be compared using repeated measures ANOVA. What are the data types and what are the relationships between the observations, if any?