1050 490 3 1440 380 9 750 560 1 500 230

a. Construct a scatterplot using y calories and x fat. Does it look like there is a relationship between fat and calories? Is the relationship what you expected? Explain.

b. Construct a scatterplot using y calories and x sodium. Write a few sentences commenting on the difference between the relationship of calories to fat and calories to sodium.

c. Construct a scatterplot using y sodium and x fat. Does there appear to be a relationship between fat and sodium?

d. Add a vertical line at x 3 and a horizontal line at y 900 to the scatterplot in Part (c). This divides the scatterplot into four regions, with some of the points in the scatterplot falling into each of the four regions. Which of the four regions corresponds to healthier fast-food choices? Explain.