At 04:09 PM 03/04/98 -0800, Steven X. Schwenk wrote: > >Ian...I know nothing as far as whether the variables I have proposed are >appropriate or sufficient for meaningful statistical analysis. All that matters is that they can be quantified in some way. Best is actual ratio data, measured on a scale with equal intervals and a zero point, but anything that can be quantified will do, even if the scale is arbitrary. Hardness of water, for instance, could be measured on a scale of 1 to 10, where 1 is distilled water and 10 is water from the Great Salt Lake. Or dichotomous measures can be used (yes or no, present or absent). |
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