StatTutor Lesson - How to Experiment Badly

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      Question 1

      127

      Question 1.

      Of the following, which is the best fix for this study?

      		A.
      		B.
      		C.
      Incorrect. Answer C includes a placebo or fake treatment with a control group. Plus, the subjects are randomly assigned to the two groups. Both of these will "fix" the original study. Additionally, taking some type of measurement that is not self-reporting will improve the study.
      Correct. Answer C includes a placebo or fake treatment with a control group. Plus, the subjects are randomly assigned to the two groups. Both of these will "fix" the original study. Additionally, taking some type of measurement that is not self-reporting will improve the study.
      Incorrect. Try again.
      2

      Questions 2-3

      191

      Question 2.

      According to these diagrams, what is missing in simple designs that can yield worthless results?

      		A.
      		B.
      		C.
      Incorrect. The best fix would be to create a study that includes a placebo or fake treatment with a control group. Here, the subjects are randomly assigned to the two groups. Additionally, taking some type of measurement that is not self-reporting will improve the study.
      Correct. The best fix would be to create a study that includes a placebo or fake treatment with a control group. Here, the subjects are randomly assigned to the two groups. Additionally, taking some type of measurement that is not self-reporting will improve the study.
      Incorrect. Try again.
      2