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 4.139

gardasilreg

41. Gardasil Shots and Age. The accompanying table shows a random sample of 10 patients from the Chapter 5 Case Study data set, Gardasil, including the age of the patient and the number of shots taken by the patient .

Age Shots
13 3
21 3
16 3
17 2
17 3
18 1
25 2
15 3
12 1
16 1
Table 4.54: Source: Journal of Statistics Education.

4.2.41

(a) (b) The predicted number of shots that a person will get is 0.02 times the person's age in years plus 1.93. (c) For each increase of 1 year of age the predicted number of shots that a person will get increases by 0.02. (d) The predicted number of shots that a person who is years old will get is 1.93.