quad_3D {OptimaRegion}

Central composite design experiment dataset (3 factors)

Description

Box and Draper (1987)'s three factor experimental dataset

Usage

quad_3D

Format

A data frame with 16 observations on the following 4 variables

x1

percentage concentration of the 1st constituent, in coded unit

x2

percentage concentration of the 2nd constituent, in coded unit

x3

temperature, in coded unit

y

elasticity of certain polymer

References

Box GEP, Draper NR (1987). Empirical Model Building and Response Surfaces.. John Wiley and Sons, New York,NY.