For Exercises 2.23 and 2.24, see page 75; and for 2.25 and 2.26, see pages 77–78.

Question 2.33

2.33 Marketing in Canada

In Exercise 2.14 (page 73), you examined the relationship between the percent of the population over 65 and the percent under 15 for the 13 Canadian provinces and territories.

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  1. Make a scatterplot of the two variables if you do not have your work from Exercise 2.14.
  2. Find the value of the correlation .
  3. Does this numerical summary give a good indication of the strength of the relationship between these two variables? Explain your answer.

2.33

(b) . (c) No, although the relationship is mostly linear, there is an outlier, Nunavut, with a high percent of under 15 and a very low percent of over 65.