R : Copyright 2001, The R Development Core Team Version 1.3.0 Under development (unstable) (2001-02-19) R is free software and comes with ABSOLUTELY NO WARRANTY. You are welcome to redistribute it under certain conditions. Type `license()' or `licence()' for distribution details. R is a collaborative project with many contributors. Type `contributors()' for more information. Type `demo()' for some demos, `help()' for on-line help, or `help.start()' for a HTML browser interface to help. Type `q()' to quit R. > library(foreign) > ex1.51 <- read.mtp("ex1-51.mtp") > summary(ex1.51) Length Class Mode control 26 -none- numeric seeded 26 -none- numeric > str(ex1.51) List of 2 $ control: num [1:26] 1203 830 372 346 321 ... $ seeded : num [1:26] 2746 1698 1656 978 703 ... > ex1.51 <- data.frame(ex1.51) > summary(ex1.51) control seeded Min. : 1.00 Min. : 4.10 1st Qu.: 24.82 1st Qu.: 98.12 Median : 44.20 Median : 221.60 Mean : 164.59 Mean : 441.98 3rd Qu.: 159.20 3rd Qu.: 406.02 Max. :1202.60 Max. :2745.60 > q()