There is no minimum sample size for the t test to be valid other than it be large enough to calculate the test statistic. ... <看更多>

We need the sample sizes of groups A and B, the sample variances and the estimated difference between the sample means of X in A and B. How does two-sample t- ... ... <看更多>

If the unequal sample sizes are independent groups, then the mean can be parsed in R via an unpaired two-sample t-test. ... <看更多>