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ATTN: Statistics Ufies by vectorz2006-09-18 04:04:33
  It really depends on the experiment, by Jeff_uk2006-09-18 04:27:34
    Alternatively you could use the interquartile mean by Jeff_uk2006-09-18 04:33:31
      Thanks & furter info. by vectorz 2006-11-19 12:55:59
There is no apparent reason, all the experiments where conducted identically (minor differences can occur of course, but I can't simply kick out values).

For ilustration: The experiment was done in such 96- wellplates with different substances in each collum. Then each well is measured and I get 8x the same result for each substance. For plotting I have to 'average' them somehow. br> Eg. 2.064, 2.158, 0.18, 0.088, 0.12, 0.265. Average is: 0.813, Median is: 0.223. Speaking from experience the 2.xxx values are too high and the others are about right, so the Median would be better. (Of coruse it needs an error bar/ devination etc. for complete representation)

Manual clean up of the data isn't a good idea because bias and also because of the sheer volume of numbers (There are quite a few of these plates...)

But is it acceptable use the Median in this case? Because normally people would use the mean without much thinking. So I need to justify it somehow.

[ Reply ]
        What about grouping? by anymouse2006-09-18 05:53:34
          They probably do by vectorz2006-09-18 06:59:18
            Confounding factors! by mathwaster2006-09-18 07:23:43
              Thanks. by vectorz2006-09-18 07:50:32
        plate was dirty - that's a reason you can get by jayfarm2006-09-18 06:08:09
        If it's "real data" report on spread by etwas_egal2006-09-18 08:45:34

 

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