Yield from two processes
A resin is one component in paint formulations. A chemist was working on a process for producing a resin needed in a paint formulation. Two competing processes were tested for the amount of resin the could produce.
A data frame with 9 observations on the following 2 variables.
processa factor with levels A and B
yielda numeric vector
Peter R. Nelson, Marie Coffin and Karen A. F. Copeland (2003), Introductory Statistics for Engineering Experimentation, Elsevier. (Appendix A)
str(assay) summary(assay) dotplot(process ~ yield, assay)
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