search for: x20_2_tt_z_e4

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2007 Oct 19
2
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Hi everyone, I read the following data > setwd("d:/") > mydata <- read.table("mydata.txt", header=T) > attach(mydata) > mydata name X20_1_TT_Z_e4 X20_2_TT_Z_e4 1 A1 102 22 2 A2 103 21 3 A3 107 20 > name [1] A1 A2 A3 Levels: A1 A2 A3 > mode(name) [1] "numeric" Why name is a factor and numeric? and why I do have X before the variable namin X20_1_TT_Z_e4? Is it possbil...