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

Question 2.29

2.29 A product for lab experiments

In Exercise 2.17 (page 73), you described the relationship between time and count for an experiment examining the decay of barium.

decay

  1. Is the relationship between these two variables strong? Explain your answer.
  2. Find the correlation.
  3. Do you think that the correlation you computed gives a good numerical summary of the strength of the relationship between these two variables? Explain your answer.

2.29

(a) Yes, the data points form a nice curve. (b) . (c) No, the data shows a curve, not a line; a transformation is needed to get a better relationship.