T-test in Research Methodology – Definition, Formula, Types, Examples, and Applications

T-test in Research Methodology – Definition, Formula, Types, Examples, and Applications

The T-test is a statistical test used to compare means and check whether the difference observed between two datasets is statistically significant or due to random variation.

Z-test in Research Methodology – Definition, Formula, Types, Examples, and Applications

Z-test in Research Methodology – Definition, Formula, Types, Examples, and Applications

The Z-test is a parametric statistical test used to determine whether there is a significant difference between a sample and a population, or between two independent samples.