R version 2.12.0 (2010-10-15)
Copyright (C) 2010 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: i486-pc-linux-gnu (32-bit)

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> x <- c(4.69,4.69,4.69,4.69,4.69,4.69,4.69,4.73,4.78,4.79,4.79,4.8,4.8,4.81,5.16,5.26,5.29,5.29,5.29,5.3,5.3,5.3,5.3,5.3,5.3,5.3,5.3,5.35,5.44,5.47,5.47,5.48,5.48,5.48,5.48,5.48,5.48,5.48,5.5,5.55,5.57,5.58,5.58,5.58,5.59,5.59,5.59,5.55,5.61,5.61,5.61,5.63,5.69,5.7,5.7,5.7,5.7,5.7,5.7,5.7)
> par4 = '12'
> par3 = 'Aantal verkochte sigaretten van 01-'06 tot 12-'10'
Error: unexpected numeric constant in "par3 = 'Aantal verkochte sigaretten van 01-'06"
Execution halted