1. A Pearson r correlation is a ratio of the ________________ and the __________________. a. difference between variable means, sum of products b. sum of products, scatterplot c. change in variables...

1. A Pearson r correlation is a ratio of the ________________ and the __________________.

a. difference between variable means, sum of products

b. sum of products, scatterplot

c. change in variables together, total variability

d. both (a) and (c)

2. A ____________________ analysis can help you predict the value of one variable from the value of the other variable.

a. scatterplot

b. regression

c. Pearson r

d. sum of products