R version 2.15.3 (2013-03-01) -- "Security Blanket"
Copyright (C) 2013 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: i686-pc-linux-gnu (32-bit)

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> y <- c(3.2±1.56,6.47±1.45,8.56±1.01,6.45±2.51)
Error: unexpected input in "y <- c(3.2±"
Execution halted