ETX1100/ETX5900 Business Statistics

Week 3: Sampling and estimation

What you will learn this week

  • Explain random sampling, bias, sampling variation and the central limit theorem.
  • Calculate and interpret standard errors.
  • Construct confidence intervals for population means and proportions.
  • Explain how confidence level and sample size affect precision.

Class workbooks

Slides for the week

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Upcoming assessments

  • Week 3: Quiz 3
  • Week 4: Quiz 4; written assignment due at the end of Week 4
  • Week 5: Quiz 5