Methods and formulas for effects plots in Analyze Binary Response for Response Surface Design

Normal probability plot

Minitab plots the normal scores, probabilities or percentages versus the standardized effects. The line corresponds to a normal distribution with a standard deviation of 1. Effects with p-values less than α are labeled significant on the graph. Minitab labels this graph Normal Plot of the Standardized Effects.

Half normal plot

Minitab plots the normal scores, probabilities or percentages versus the standardized effects. The line corresponds to a normal distribution with a standard deviation of 1. Effects with p-values less than α are labeled significant on the graph. Minitab labels this graph Half Normal Plot of the Standardized Effects.

Pareto chart

The red line on the Pareto chart is drawn at Z, where Z is the (1 – α / 2) quantile of a standard normal distribution. Minitab labels this graph Pareto Chart of the Standardized Effects.