The Data tab in Excel which helps a regular analyst to analyze the data. As data tab includes analysis Toolpak, which has most of the statistical models which help in forecasting and analyzing the data.
To Load and activate the Analysis ToolPak , Click the File tab, click Options, and then click the Add-Ins category. In the Manage box, select Excel Add-ins and then click Go.
In the Add-Ins box, check the Analysis ToolPak check box, and then click OK.
Easy way to learn is to start with linear Regression and follow your theoretical knowledge; as a result, gives you a Linear regression Equation.