Wednesday, March 17, 2010

ANOVA - Chapter 12

Don't read pg 368-373.

Things beyond this class:
  1. Factorial ANOVA designs
  2. Dunns procedure

Announced that even though the course schedule has the 1st draft of full report due, the draft is now due Apr 5.

ANOVA accounts for the variation within groups (WG) and between groups (BG).

Optimal case is low variation within groups (WG) and large variation between groups (BG) because it is said that you have controlled extraneous variables and are measuring what you want to measure.

Total Variance (TV) = BG + WG

F statistic = BG/WG

A significant F statistic does not tell you which means are significantly different from which means. It only tells you that at least one mean is significantly different from another.

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