1.
Exploratory Data Analysis
1.3. EDA Techniques 1.3.3. Graphical Techniques: Alphabetic
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Purpose: Interlab Comparisons |
Youden plots are a graphical technique for analyzing
interlab data when each lab has made two runs on the
same product or one run on two different products.
The Youden plot is a simple but effective method for comparing both the within-laboratory variability and the between-laboratory variability. |
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Sample Plot |
This plot shows:
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Definition: Response 1 Versus Response 2 Coded by Lab |
Youden plots are formed by:
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Questions |
The Youden plot can be used to answer the following
questions:
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Importance |
In interlaboratory studies or in comparing two runs from the same lab, it is useful to know if consistent results are generated. Youden plots should be a routine plot for analyzing this type of data. | ||
DOE Youden Plot | The DOE Youden plot is a specialized Youden plot used in the design of experiments. In particular, it is useful for full and fractional designs. | ||
Related Techniques |
Scatter Plot |
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Software | The Youden plot is essentially a scatter plot, so it should be feasible to write a macro for a Youden plot in any general purpose statistical program that supports scatter plots. |