Election fraud in Iran and Iowa: debrief

Inference for Categorical Data in R

Andrew Bray

Assistant Professor of Statistics at Reed College

Iowa election fraud

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Inference for Categorical Data in R

Iowa election fraud

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Inference for Categorical Data in R

Iowa election fraud

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Inference for Categorical Data in R

Take-home lesson

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The statistical tool must be appropriate for the task.

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1 By TUBS [CC BY-SA 3.0], from Wikimedia Commons 2 By P30Carl [GFDL] or [CC BY-SA 3.0], from Wikimedia Commons
Inference for Categorical Data in R

Methods for categorical data

Confidence Intervals

  • One proportion
  • Difference in proportions

Hypothesis tests

  • One proportion
  • Difference in proportions
  • Test of independence
  • Goodness of fit
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Let's practice!

Inference for Categorical Data in R

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