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Exercise 17

Avg difficulty 3.0

Paired or not? Part I. In each of the following scenarios, determine if the data are paired.

  1. Compare pre- (beginning of semester) and post-test (end of semester) scores of students.

  2. Assess gender-related salary gap by comparing salaries of randomly sampled men and women.

  3. Compare artery thicknesses at the beginning of a study and after 2 years of taking Vitamin E for the same group of patients.

  4. Assess effectiveness of a diet regimen by comparing the before and after weights of subjects.

Diez, Barr & Çetinkaya-Rundel, OpenIntro Statistics, Inference for numerical data, End-of-Chapter Exercises, Exercise 17

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Adapted from OpenIntro Statistics © 2019 David Diez, Mine Çetinkaya-Rundel & Christopher D. Barr. Licensed under CC BY-SA 3.0. Source: OpenIntro Statistics. Imported at revision fee2509.