Measures of dispersion of 11th class of teaching point of standard deviation for combined data and standard deviation for combined series explanation of using formula of teaching solved examples of mathematics and statistics of (science)
you know how can I get the combined standard deviation when I am only given 2 samples which includes 2 n and 2 mean but only have one variance from sample B.
Isn't the formula to calculate the combined mean x1*n1+x2*n2 divided by n1+n12?
Measures of dispersion of 11th class of teaching point of standard deviation for combined data and standard deviation for combined series explanation of using formula of teaching solved examples of mathematics and statistics of (science)
you know how can I get the combined standard deviation when I am only given 2 samples which includes 2 n and 2 mean but only have one variance from sample B.
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