Statistical Analysis and Programming
Description
The Hypothesis tests for the means of independent or paired groups.
This package investigates the normality assumption automatically.
Then, it tests the hypothesis tests for two independent or paired group means
by using parametric or non-parametric tests. It uses the Shapiro-Wilk test to
test the normality assumption. For independent two groups, If data comes from
the normal distribution, the package uses the Z or t-test according to whether
variances are known. For paired groups, it uses paired t-test under normal data
sets. If data does not come from the normal distribution, the package uses the
Wilcoxon test for independent and paired cases.