Purpose

To discuss Type I and Type II errors and how they relate to the idea of statistical power.

Making decisions

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Setting decision thresholds

  • Goal: Minimize the probability of making errors
  • Types of errors
    • False positives: Nothing’s going on, but we say otherwise (Type I)
    • False negatives: Something’s going on, but we miss it (Type II)
knitr::include_graphics("https://i.stack.imgur.com/R0ncP.png")