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STAT 3743 Daily Outline

STAT 3743 Daily Outline

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2010-12-01 Wed

Analysis of Variance (ANOVA)

Motivation

ANOVA Decomposition

Between vs. within

Sampling dist's of SSTO, SSE

Cochran's Theorem

Sampling dist'n of SST

ANOVA Table

Example: breaks by tension in warpbreaks data

How to do it with R

the aov function in base R

Remarks

  • constant variance
  • normality assumption
  • multi-way ANOVA
  • balanced sample sizes

Author: G. Jay Kerns

Date: 2010-12-03 15:03:54 EST

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