MA 102 Statistical Controversies Wednesday, February 6, 2002

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MA 102 Statistical ControversiesWednesday,
February 6, 2002

• Today
• Questions on HW 1?
• Terms and methods of experiments and studies
• Reading (for Friday)
• Chapter 5 Experiments, Good and Bad
• Exercises 5.1, 5.3, 5.5, 5.9, 5.11, 5.16, 5.17,
  5.20

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Experiments and Studies Key Terms

• Explanatory variable
• Response variable
• Lurking variable
• Confounding
• Randomized comparative experiment
• Placebo effect
• Statistical significance

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Some Examples of Studies

• Do students learn better online than in class?
• Is gastric freezing a treatment for stomach
  ulcers?
• Does day care improve the chance of a better
  future for low income children?
• Does hydroxyurea help sickle cell anemia
  patients?
• Does close monitoring of energy use conserve
  energy?

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