Henry wrote: > I have a set of sample results and controls for 3 levels. > > Control values like : 0.8; 1.7; 2.5 > sample values: 0.45, .75, 0.9, 1.2, 1.23, 1.35, 1.45, 1.55, 1.54, > 1.78, 1.89, 1.98, 2.01, 2.33, 2.45, 2.65, 2.8, 3.0 > > In practics, I simply based on each sample data point position > relative to control in Excel chart to classify them to a control > group.
I'm sorry, you'll have to re.write this - I can't parse the sentence, and I suspect few others can too. I can make a guess about what you're asking (in which case, there is a solution to your problem), but I'd rather wait to be confused later. I wonder if there is any statistical parameter I can compute to > support my claim that 1.23 should be more like control of 0.8, but not > control of 1.7? is there some kind of likelihood or probabilty to be > computed? > > Seems silly, but it does happen a lot in reality. Sounds like life. Bob -- Bob O'Hara Rolf Nevanlinna Institute P.O. Box 4 (Yliopistonkatu 5) FIN-00014 University of Helsinki Finland Telephone: +358-9-191 23743 Mobile: +358 50 599 0540 Fax: +358-9-191 22 779 WWW: http://www.RNI.Helsinki.FI/~boh/ . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
