Parametric Methods

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Paired t test (compare a pair of samples)
Single sample t test (compare the mean of a sample with a specified mean)
Unpaired (two sample) t test (compare two independent samples)
Z (Normal distribution) tests (single sample and unpaired tests analogous to t tests)
Reference range (reference range/interval from a sample)
F (variance ratio) test (compare the variances of two samples)
Poisson confidence interval (e.g. CIs for means of counts of events in time)
Normality tests (examine a sample for evidence of non-normality)

This section provides various hypothesis tests and descriptive functions that assume your data are from a normal distribution.