For each thread the student must include a title block with your name, class title, date, and the discussion forum number; write the question number and the question title as a level one heading (e.g. D1.1 Variables) and then provide your response; use Level Two headings for multi-part questions (e.g. D1.1 & D1.1.a, D1.1.b, etc.), and include a reference section.

Respond to the following short answer questions in Chapter 8 from Morgan, Leech, Gloeckner, & Barrett textbook:

D6.8.1 Why would we graph scatterplots and regression lines?

D6.8.2 In Output 8.2, (a) What do the correlation coefficients tell us? (b) What is r2 for the Pearson correlation? What does it mean? (c) Compare the Pearson and Spearman correlations on both correlation size and significance level; (d) When should you use which type in this case?

D6.8.5 In Output 8.5, what do the standardized regression weights or coefficients tell you about the ability of the predictors to predict the dependent variable?