The dataset NutritionStudy contains information on daily calorie consumption, fat consumption, and fiber consumption for 315 healthy individuals. Figure A.14 shows a scatterplot of fat vs calories and a scatterplot of fiber vs calories. (In these figures, we have omitted one extreme outlier.)

Figure A.14

(a) Does there appear to be a positive or negative correlation between calories and fat? Between calories and fiber?

(b) Judging from the scatterplots, which correlation appears to be larger: between calories and fat or between calories and fiber?

(c) One person in the study consumed over 4000 calories daily. Approximately what was the fat consumption for this person? The fiber consumption? Is the value an extreme value for either fat or fiber as an individual variable?

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4000 4000 3000 3000 2000 2000 1000 - 1000 10 100 200 40 150 Fat 50 250 20 30 Flber Calories Calories