Chapter 4, Problem 41SE

Choosing the Predictor and Response Variables (Example 6) Indicate which variable you think should be the predictor $\left(x\right)$ and which variable should be the response $\left(y\right)$. Explain your choices.

a. You have collected data on used cars for sale. The variables are price and odometer readings of the cars.

b. Research is conducted on monthly household expenses. Variables are monthly water bill and household size.

c. A personal trainer gathers data on the weights and time spent in the gym for each of her clients.