Recent content by leonidnk

Thank you very much!:smile:

If these methods are the same, they should give a same p-value.

Thank you. But I cannot see any big difference between this Z-test and T-test on http://ccnmtl.columbia.edu/projects/qmss/the_ttest/twosample_ttest.html.

Thanks. OK, I can get a t-value by that, but how I can get a p-value? If we look at http://graphpad.com/quickcalcs/PValue1.cfm, we see I need some DF-value. How I can get it?

Thank you. What about p-value? Is it possible to calculate it?

n=45

I have to explain. I have a two measurement series (1 and 2) of N measurements each. One series has arithmetic mean x1 and standard deviation s1, another series has arithmetic mean x2 and standard deviation s2. How I can get know, have the series 1 and 2 significant statistical difference or...

The raw data are lost, I have only final outputs (arithmetic means and standard deviations) for equally long measurement series. How I can compare results (calculate results) for the purpose to see significant statistic difference (significant difference, p<0.05)? Thank you in advance.