indexfinger <- structure(list(sex = structure(as.integer(c(2, 1, 2, 1, 1, 2, 1, 2)), .Label = c("F", "M"), class = "factor"), length = c(7.9, 6.5, 8.4, 5.5, 6.5, 8, 7, 7.5), width = c(2.3, 1.7, 2.6, 1.7, 1.9, 2.1, 1.8, 1.9)), .Names = c("sex", "length", "width"), class = "data.frame", row.names = c("1", "2", "3", "4", "5", "6", "7", "8"))