R version 2.13.0 (2011-04-13) Copyright (C) 2011 The R Foundation for Statistical Computing ISBN 3-900051-07-0 Platform: i486-pc-linux-gnu (32-bit) 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 and 'citation()' on how to cite R or R packages in publications. Type 'demo()' for some demos, 'help()' for on-line help, or 'help.start()' for an HTML browser interface to help. Type 'q()' to quit R. > x <- c(Year-Quarter t Yt,2001-1 1 17,2001-2 2 26,2001-3 3 21,2001-4 4 15,2002-1 5 19,2002-2 6 18,2002-3 7 21,2002-4 8 23) Error: unexpected symbol in "x <- c(Year-Quarter t" Execution halted