Dear R users: I'm trying to program the Friedman'test(),but I meet
some problemes. I am reading the data below with
s1=read.table("1express.txt",header=T) Then,I get the
datas1B1AD1X1544766544777766765988666666776466787776679778777886868655786777888555666676666777676888654767456765877779664676788887666354778775777454764888767876566554665776776876655766365654777889365466777778889565878666656897434777664889666777
attach(s1)friedman.test(s1£©¡°Error in friedman.test.default(s1) : argument
"groups" is missing, with no default¡± I don't know what's the meaning of the
problem,and I am not sure where the problem
Can anybody give me a suggestion?
Thanks in advance
Rocia
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