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  1. M

    Coefficient of Variance(clarification)

    Can someone please help me with this. I read on wikipedia that the coefficient of Variance can be used when the measurements are of ratio scales but cannot be used on interval scales. I know it is useful to use it to compare samples with completely units like the variance in your mass...
  2. M

    Adding two set of samples with standard deviation confusions

    Hello People, I'm and just somewhat confused about this topic. Lets say I have a sample set A with sample size= 101 mean =10 and sample stdv of 1 then sample set B with sample size= 100 Mean=15 with sample stdv of 2. If i add these two samples sets together I should get a new stdv that...