search for: pri472

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2012 Jun 25
2
Fractional Factorial - Wrong values using lm-function
...se of aov and lm-functions. I'm doing a fractional factorial experiment at our production site, and I need to familiarize myself with the analysis before I conduct the experiment. I've been working my way through the examples provided at http://www.itl.nist.gov/div898/handbook/pri/section4/pri472.htm http://www.itl.nist.gov/div898/handbook/pri/section4/pri472.htm , but I can't get the results provided in the trial model calculations. Why is this. Here is how I have tried to do it: > data.catapult=read.table("Fractional.txt",header=T) #Read the data in the > table provid...