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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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