Diameter of washers.
A data frame with 20 observations on the following variable:
diameter of washer in cm
Ugarte, M. D., Militino, A. F., and Arnholt, A. T. (2008) Probability and Statistics with R. Chapman & Hall/CRC.
#> [1] "diameters"#> Size (n) Missing Minimum 1st Qu Mean Median TrMean 3rd Qu #> 20.000 0.000 3.850 3.928 3.986 3.990 3.987 4.037 #> Max. Stdev. Var. SE Mean I.Q.R. Range Kurtosis Skewness #> 4.120 0.073 0.005 0.016 0.109 0.270 -0.799 -0.059 #> SW p-val #> 0.936