Tag: How To

High Performance Statistical Queries: Linear Dependencies Between Continuous Variables

Dejan Sarka
high performance statistical queries, covariance, correlation coefficient, coefficient of determination, linear regression, linear dependence, sql dependencies
In my previous articles, I dealt with analyses of only a single variable. Now it is time to check whether two variables of interest are independent or somehow related. For example, a person’s height positively correlates with shoe size. Taller people have larger shoe sizes, and shorter people have smaller shoe sizes. You can find this and many more examples of positive associations at: http://examples.yourdictionary.com/positive-correlation-examples.html. A negative association is also possible.