For Exercises 37–51, do the following for the indicated data sets from the Section 4.1 exercises:

  1. Calculate the slope and the intercept of the regression line.
  2. State the regression equation in words.
  3. Interpret the value for the slope of the regression line, in terms of the variables from the particular exercise.
  4. Interpret the value for the intercept of the regression line, in terms of the variables from the particular exercise.

Question 4.141

satfatcorr

43. Saturated Fat and Calories. The table contains the calories and saturated fat in a sample of 10 food items.

Food item Calories Grams of
saturated fat
Chocolate bar (1.45 ounces) 216 7.0
Meat & veggie pizza
(large slice)		 364 5.6
New England clam chowder
(1 cup)		 149 1.9
Baked chicken drumstick
(no skin, medium size)		 75 0.6
Curly fries, deep-fried (4 ounces) 276 3.2
Wheat bagel (large) 375 0.3
Chicken curry (1 cup) 146 1.6
Cake doughnut hole (one) 59 0.5
Rye bread (1 slice) 67 0.2
Raisin bran cereal (1 cup) 195 0.3
Table 4.56: Source: Food-a-Pedia.

4.2.43

(a) (b) The predicted number of grams of saturated fat in a food item is 0.01 times the number of calories in the food item plus 0.33 gram. (c) For each increase of 1 calorie in a food item the predicted number of grams of saturated fat increases by 0.01 gram. (d) The predicted number of grams of saturated fat in a food item with calories is 0.33 gram.