Announcements

Recall

  • Thought Experiment: Sample 3 students at random and get their (sample) mean age.
  • Question: What value quantifies how much these sample means vary by?
  • Answer: The standard error.
Random Sample (Sample) Mean Age
Jack, Jared, Sam 21.7
Wengel, Rebecca, Steven 19.4
Stefan, Joccelyn, Sierra 20.0


In-Class

  • Slides: Tying the concepts of standard errors and confidence intervals together.

After-Class Updates