Data for Exercise 5.20

Skin

## Format

A data frame/tibble with 11 observations on four variables

patient

patient identification number

close

graft survival time in days for a closely matched skin graft on the same burn patient

poor

graft survival time in days for a poorly matched skin graft on the same burn patient

differ

difference between close and poor (in days)

## Source

R. F. Woolon and P. A. Lachenbruch, "Rank Tests for Censored Matched Pairs," Biometrika, 67(1980), 597-606.

## References

Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.

## Examples


stem(Skin$differ) #> #> The decimal point is 1 digit(s) to the right of the | #> #> -0 | 63 #> 0 | 55684 #> 2 | 00 #> 4 | 2 #> 6 | 7 #> boxplot(Skin$differ, col = "pink")

summary(Skin\$differ)
#>    Min. 1st Qu.  Median    Mean 3rd Qu.    Max.
#>   -6.00    5.00    8.00   16.18   20.00   67.00