penicillin.data: Penicillin data

In BHH2: Useful Functions for Box, Hunter and Hunter II

Description

Penicillin yield example data set.

Usage

data(penicillin.data)

Format

A data frame with 20 observations on the following 4 variables.

blend

factor with 5 levels: B1 B2 B3 B4 B5. Blend factor used to block the experiment.

run

numeric vector. Run order within the blocking (Blend) factor.

treat

factor with levels: A B C D. The process variants called treatment.

yield

numeric vector. Experiment yield response.

Source

Box G. E. P, Hunter, W. C. and Hunter, J. S. (1978). Statistics for Experimenters. New York: Wiley.

References

Box G. E. P, Hunter, J. S. and Hunter, W. C. (2005). Statistics for Experimenters II. New York: Wiley.

Examples

data(penicillin.data)
str(penicillin.data)
plot(penicillin.data)

Example output

'data.frame':	20 obs. of  4 variables:
 $ blend: Factor w/ 5 levels "B1","B2","B3",..: 1 2 3 4 5 1 2 3 4 5 ...
 $ run  : int  1 4 2 1 3 3 2 1 3 4 ...
 $ treat: Factor w/ 4 levels "A","B","C","D": 1 1 1 1 1 2 2 2 2 2 ...
 $ yield: int  89 84 81 87 79 88 77 87 92 81 ...

BHH2 documentation built on May 1, 2019, 6:27 p.m.