What is a one sample t test? The t test is a commonly used hypothesis test in statistics that allows us to compare the mean value of a group of sampled data with some hypothesized value, usually a ...

This short course will cover the one sample t-test, the two sample t-test, matched-pairs t-test, one-way ANOVA (Analysis of Variance), two-way ANOVA and ANCOVA (Analysis of Covariance). These ...

This is a preview. Log in through your library . Abstract If the maximum sample size for a group sequential t-test is calculated on the basis of a prior estimate of the variance, power at a fixed ...