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Home Statistical Tests Means and Medians Two-Sample t-Test Large Sample Size | |
See also: small sample size, distribution calculator, survey on statistical tests | |
Two-Sample t-Test - Large SamplesWe define a new variable: the difference,
between the means and of the two samples. The mean of this variable d is . Its standard deviation is given by: which is also called the standard error. For large samples (n1,
n2) the distribution of the differences d is approximately normal.
So we can apply the same methods as for the one-sample
t-test for large samples, but now using the new variable d.
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Home Statistical Tests Means and Medians Two-Sample t-Test Large Sample Size |