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