Sales of jelly (X) and sales of peanut butter (Y) at a local store are recorded weekly. The correlation between X and Y is 0.9. Which is the best explanation of what this correlation means? (a) 90% of...

Sales ofjelly (X) and sales ofpeanut butter (Y) at a local store are recorded weekly. The correlation between X and Y is 0.9. Which is the best explanation of what this correlation means?

(a) 90% of customers either buy peanut butter or jelly.

(b) 90% of the variability in peanut butter sales can be explained by variability in jelly sales.

(c) 81% of the variability in peanut butter sales can be explained by variability in jelly sales.

(d) 90% of the time when the price of peanut butter goes up, so does the price of jelly.