Glossary of Terms – Z

Z-test:

Z-test is a statistical test that is based on the standard normal distribution. Z-tests are useful while determining the inferences like statistical significance of the difference between sample means and the population means. The reliability of the Z-Tests is based on the knowledge of the population mean and population standard deviation in a simple random sample. though this may sound complex Z-test are very often utilised as they are one of the most reliable sources of market research.