film {EMSaov}

Dry-film thickness

Description

Two days in a given month were randomly selected in which to run an experiment. three operators were selected at random from a large pool of available operators. The experiment consisted of measuring the dry-film thickness of varnish in mils for three different gate settings: 2, 4, and 6.

Usage

data("film")

Format

A data frame with 36 observations on the following 4 variables.

thickness

a numeric vector

Gate

a numeric vector

Operator

a factor with levels A B C

Day

a numeric vector

References

Fundamental Concepts in the Design of Experiments (3rd ed.) - Charles R. Hicks

Examples

data(film)
## maybe str(film) ; plot(film) ...