Data for the batteries example

This is a simulated data set of 18 measurements of the voltage of batteries using different voltmeters.

data(ss.data.batteries)

Format

A data frame with 18 observations on the following 4 variables.

voltmeter

a factor with levels 1 2

battery

a factor with levels 1 2 3

run

a factor with levels 1 2 3

voltage

a numeric vector

Source

See references.

Note

This data set is used in chapter 5 of the book ``Six Sigma with R'' (see References).

References

Cano, Emilio L., Moguerza, Javier M. and Redchuk, Andrés. 2012. Six Sigma with R. Statistical Engineering for Process Improvement, Use R!, vol. 36. Springer, New York. https://link.springer.com/book/10.1007/978-1-4614-3652-2/.

See also

ss.rr

Examples

data(ss.data.batteries)
summary(ss.data.batteries)
#>  voltmeter battery run      voltage     
#>  1:9       1:6     1:6   Min.   :1.334  
#>  2:9       2:6     2:6   1st Qu.:1.464  
#>            3:6     3:6   Median :1.526  
#>                          Mean   :1.544  
#>                          3rd Qu.:1.590  
#>                          Max.   :1.842  
plot(voltage~voltmeter, data = ss.data.batteries)