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140f
2009 Sep 08
1
Unexpected behavior in friedman.test and ks.test
...Excel (for which we have a statistics Add-In purchased, don't' start to flame me on using Excel for stats, please!); so I wanted to automate the analysis in R and figured out the results differ from Excel. Example
Take the data from example(friedman.test)? (Hollander & Wolfe (1973), p. 140ff.). I ran the example in R and got:
Friedman rank sum test
data: RoundingTimes?
Friedman chi-squared = 11.1429, df = 2, p-value = 0.003805
Same data, in Excel, using the WinSTAT for Excel (Fitch software), gives: Friedman chi-squared = 10.6364, df = 2, p-value =0.004902
Puzzled, I entere...