Suppose you collect data for each of the following pairs of variables. You want to make a scatterplot. Identify the response and explanatory variables. What would you expect to see in the scatterplot?...

Suppose you collect data for each of the following pairs of variables. You want to make a scatterplot. Identify the response and explanatory variables. What would you expect to see in the scatterplot? Discuss the likely direction, curvature, and variation.

(a) Winter electricity: kilowatts, temperature

(b) Long-distance calls: time (minutes), cost

(c) Air freight: weight of load, fuel consumption

(d) Advertising: length of commercial, number who remember ad

(e) Health: amount of exercise per week (hours), percentage body fat