Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

eWEEK content and product recommendations are editorially independent. We may make money when you click on links to our partners. Learn More. Linear regression may be the most basic and accessible ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New ...

Residual plots can be used to validate assumptions about the regression model ... distributed with constant variance. Here, the definition of 'large' depends on the nature of the non-normality.

“The statistician knows...that in nature there never was a normal distribution, there never was a straight line, yet with normal and linear assumptions, known to be false, he can often derive ...