Ch 43: Experiments and Surveys

About This Chapter

Use the following video lessons and quizzes to study methods for designing and interpreting randomized experiments. Learn how to identify sources of bias in polls, surveys and other types of statistical information.

Experiments and Surveys - Chapter Summary

Now that you're familiar with experiment components and a variety of statistical measures, learn how to design experiment types in which independent variables are randomly assigned to test subjects. Lessons in this chapter can teach you how to analyze and interpret the results and assess the impact of confounding variables on experiment outcomes.

Instructors also introduce common causes of bias in statistics, so you can recognize them when assessing the reliability of poll and survey results. They'll also give you examples of the ways in which statistics can be used to intentionally mislead readers. By the time you finish viewing the lessons included in this chapter, you should be familiar with the following:

  • Randomized experiment design
  • Experiment analysis and interpretation
  • Confounding and bias in statistics
  • Sources of bias in polls and surveys
  • Misleading uses of statistics

Let our seasoned instructors walk you through the ins and outs of randomized experiment design and show you how to identify misleading statistics with the videos and transcripts included in this chapter. Instruction is delivered by experienced educators who employ a teaching style that can help you cut these difficult topics down to size. Lessons also feature self-assessment quizzes that link back to video content, so you can get an idea of how well you've grasped the material or discern how much more study time you need to put in.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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