Ztesti
Ztesti is a term that may refer to a statistical testing tool or library focused on z-tests. There is no single, formally recognized definition of ztesti in major statistical reference literature, and the term can appear as the name of a small project, a function set within a broader package, or as a colloquial shorthand in tutorials.
In statistics, a z-test assesses whether a sample statistic differs significantly from a known population parameter,
A hypothetical tool named ztesti would typically provide functions to compute the z-statistic, the corresponding p-value,
Practical usage centers on hypothesis testing for mean differences or proportion differences under normal-theory assumptions. Limitations
Overall, ztesti functions would align with standard z-test methodology and may serve as a convenience wrapper