Cheese, Please! Health-consciousAmericans often consult the nutritional informationon

Chapter 3, Problem 22

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Cheese, Please! Health-consciousAmericans often consult the nutritional informationon food packages in an attempt to avoid foodswith large amounts of fat, sodium, or cholesterol. Thefollowing information was taken from eight differentbrands of American cheese slices:Satu- Cholesratedterol SodiumBrand Fat (g) Fat (g) (mg) (mg) CaloriesKraft DeluxeAmerican 7 4.5 20 340 80Kraft VelveetaSlices 5 3.5 15 300 70Private Selection 8 5.0 25 520 100Ralphs Singles 4 2.5 15 340 60Kraft 2% MilkSingles 3 2.0 10 320 50Kraft SinglesAmerican 5 3.5 15 290 70Borden Singles 5 3.0 15 260 60Lake to LakeAmerican 5 3.5 15 330 70a. Which pairs of variables do you expect to bestrongly related?b. Draw a scatterplot for fat and saturated fat. Describethe relationship.c. Draw a scatterplot for fat and calories. Comparethe pattern to that found in part b.d. Draw a scatterplot for fat versus sodium and anotherfor cholesterol versus sodium. Compare thepatterns. Are there any clusters or outliers?e. For the pairs of variables that appear to be linearlyrelated, calculate the correlation coefficients.f. Write a paragraph to summarize the relationshipsyou can see in these data. Use the correlations andthe patterns in the four scatterplots to verify yourconclusions.