Paint hardness comparison data

A chemical engineer wants to compare the hardness of four blends of paint. Six samples of each paint blend were applied to a piece of metal, which was then cured. Then each sample was measured for hardness.

You can use this data to demonstrate One-Way ANOVA, Display Descriptive Statistics, and other analyses that compare group statistics.

Worksheet column Description Variable type
Paint The blend of paint tested: Blend 1, Blend 2, Blend 3, or Blend 4 Factor
Hardness The hardness of each sample Response
Temp The curing temperature of the sample Covariate
Operator The operator who collected the sample: 1, 2, or 3 Factor
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