Correlation and Regression are inferential statistics method used to describe the relationship among variables. Correlation is a single number refers to any of a broad class of relationships involving dependence. These statistics techniques are used to show how strongly the variables are related with each another. Here is the list of all statistical correlation and regression calculators involving various inferential statistics regression analysis.

The main result of a correlation is called the correlation coefficient (or "r"). It ranges from -1.0 to +1.0. The closer r is to +1 or -1, the more closely the two variables are related. In regression, a single dependent variable 'Y' is the function of a number of independent variables.