The basic idea behind regression analysis is to take a set of data and use that data to make predictions. A useful first step is to make a scatter plot to see the rough shape of your data. Then, choose a regression method to find the line of best fit. Which method you choose depends upon the shape the scatter plot reveals (is it a line, a curve, or a parabola?) and what special situations, if any, your data has. The following image shows an overview of regression; See below for links to more detail.

Click on the image to zoom in. For more similar images, download the book Encyclopedia of Statistical Sciences, here.

Further Reading

Linear Regression

Logistic Regression

Ridge Regression

Lasso Regression

Stepwise Regression

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