R version 3.0.2 (2013-09-25) -- "Frisbee Sailing"
Copyright (C) 2013 The R Foundation for Statistical Computing
Platform: i686-pc-linux-gnu (32-bit)

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> x <- c(8584,5522,6423,5173,5583,5716,4752,4977,4999,5285,5747,1713,9923,6737,7433,6388,6855,7658,6585,6847,6353,7361,6929,1714,11798,8378,8131,7676,7505,8168,6455,6141,6554,6888,5339,1624,9187,5047,5289,4169,3862,4253,3768,3066,4108,3890,3420,1221,5984,4064,5151,4027,3530,4819,3855,3584,4322,4154,4656,1464,7780,5060,6084,4778,4989,4903,4142,4101,4595,5034,5407,1782,8395,5291,6116,4210,4621,5299,4293,4542,3831,4360,4088,1508)
> par4 = '12'
> par3 = 'Nieuw verkochte bestelauto's'
Error: unexpected symbol in "par3 = 'Nieuw verkochte bestelauto's"
Execution halted