ratings2: Product ratings and moisture content

Description Format Details References Examples


Product ratings and moisture content


A data frame with 26 observations on the following 2 variables.


a numeric vector


a numeric vector


A company has a new raw material that they wish to quickly evaluate. To do so they rate how well their process is running at key steps when using the new material. The rating is done on a scale of 1 - 10 at each key step and then averaged. In addition the moisture level of the raw material was recorded for each batch.


Peter R. Nelson, Marie Coffin and Karen A. F. Copeland (2003), Introductory Statistics for Engineering Experimentation, Elsevier. (Appendix A)



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