3.22 Cheese, Please! Health-conscious con- sumers often consult the nutritional information on food packages in an attempt to avoid foods with large amounts of fat, sodium, or cholesterol. The fol- lowing information was taken from eight different brands of cheese slices:

a. Which pairs of variables do you expect to be strongly related?

b. Draw a scatterplot for fat and saturated fat. Describe the relationship.

c. Draw a scatterplot for fat and calories. Compare the pattern to that found in part

b. d. Draw a scatterplot for fat versus sodium and another for cholesterol versus sodium. Compare the patterns. Are there any clusters or outliers?

e. For the pairs of variables that appear to be linearly related, calculate the correlation coefficients.

f. Write a paragraph to summarize the relationships you can see in these data. Use the correlations and the patterns in the four scatterplots to verify your conclusions.

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Saturated Choles- Sodium Brand Fat (g) Fat (g) terol (mg) (mg) Calories Kraft Deluxe 7 4.5 20 340 80 Kraft Velveeta Slices 5 3.5 15 300 20 70 Private Selection 8 5.0 25 Ralphs Singles 4 2.5 25 520 100 15 340 60 Kraft 2% Milk Singles Kraft Singles Borden Singles Lake to Lake 355 2.0 5 3.5 5 3.0 15 5 3.5 9555 10 320 15 290 70 260 60 15 330 8282 50 70