"blood" <-
structure(list(Machine = c(68, 82, 94, 106, 92, 80, 76, 74, 110, 
93, 86, 65, 74, 84, 100), Expert = c(72, 84, 89, 100, 97, 88, 
84, 70, 103, 84, 86, 63, 69, 87, 93)), .Names = c("Machine", 
"Expert"), row.names = c("1", "2", "3", "4", "5", "6", "7", "8", 
"9", "10", "11", "12", "13", "14", "15"), class = "data.frame")