Day 27: STA205 - Introduction to Statistical Methods

Last time

Next time

• Announcements:
  • You have a quiz at the end of the hour.
  • Your Packet 12 IMath homework is due Tuesday.

• Today:
  • Today we hope to wrap up Packet 12: ANOVA (we could say "multi-sample" inference (instead of just "two").

    "ANOVA" stands for "Analysis of Variance". Variance is another measure of spread or "variability": the square of the standard deviation. We will tend to use the ranges in the graphics to represent spread, and to give us some idea of the "F statistics" calculated.

    In this course we consider it more important to gain an intuitive idea behind the F statistic, rather than a computational one.

    By the way, the two sample unpaired design we just studied in Packet 11 is equivalent to ANOVA with just two samples.

  • Only one more topic to follow! (Regression -- but it's a really, really important one!)

• Links:
  • The Standard Normal Table of probabilities.