Ryan's (2011) multivariate data for quality control

Multivariate data from Ryan (2011, Table 9.2).

data(RyanMultivar)

Format

Multivariate data on 20 samples of size 4 for two variables.

RyanMultivar

a list of two data frames, X1 and X2, one for each variable.

References

Ryan, T. P. (2011), Statistical Methods for Quality Improvement, 3rd ed. New York: John Wiley & Sons, Inc.

Examples

data(RyanMultivar)
str(RyanMultivar)
#> List of 2
#>  $ X1: num [1:20, 1:4] 72 56 55 44 97 83 47 88 57 26 ...
#>  $ X2: num [1:20, 1:4] 23 14 13 9 36 30 12 31 14 7 ...