Data set for the Guitar Strings example

This data set contains data from a simulated process of guitar strings production.

data(ss.data.strings)

Format

A data frame with 120 observations on the following 6 variables.

id

a numeric vector

type

a factor with levels A5 B2 D4 E1 E6 G3

res

a numeric vector for resistance

len

a numeric vector for length

sound

a numeric vector for

power

a numeric vector

Source

See references.

Note

This data set is used in chapter 10 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/.

Examples

data(ss.data.strings)
summary(ss.data.strings)
#>        id        type         res              len            sound       
#>  Min.   : 14.0   A5:20   Min.   : 1.000   Min.   :949.2   Min.   : 27.71  
#>  1st Qu.:240.8   B2:20   1st Qu.: 6.000   1st Qu.:949.9   1st Qu.: 64.39  
#>  Median :556.0   D4:20   Median : 7.000   Median :950.0   Median : 77.47  
#>  Mean   :521.9   E1:20   Mean   : 6.667   Mean   :950.0   Mean   : 78.01  
#>  3rd Qu.:785.2   E6:20   3rd Qu.: 8.000   3rd Qu.:950.2   3rd Qu.: 90.91  
#>  Max.   :997.0   G3:20   Max.   :10.000   Max.   :950.6   Max.   :131.10  
#>                                                           NA's   :68      
#>      power      
#>  Min.   :2.629  
#>  1st Qu.:2.845  
#>  Median :2.922  
#>  Mean   :2.942  
#>  3rd Qu.:3.042  
#>  Max.   :3.319  
#>  NA's   :23