Day 17: STA205 - Introduction to Statistical Methods

Last time

Next time

• Announcements:
  • I hope that you had a great and relaxing spring break.

  • Wednesday office hour (11-12) is not working -- I have too many meetings at that time. I'm changing it to 9-9:50, and 1:30-2:30.

  • We'll have a quiz over chi-squares on Thursday.

• Today:
  • Last time we finished up the chi-square ($\chi^2$) test for independence. What questions do you have about that?

  • Today we'll get a start on Packet 7: Summarizing Quantitative Data

    As an illustrative example, I'll be using statcrunch on your class height data.

• Links:
  • The Standard Normal Table of probabilities.
  • Computing chi-squares in Statcrunch is carried out using the

    Stat -> Tables -> Contingency ->

    (then either data or summary, depending on what you have)

  • Here's a Mathematica demo about Chi-Squares.