Learn about the negative correlation coefficient, its significance, comparison with other coefficients, and real-world ...

Almost every day you can find in media commentary that XYZ is causing stocks to fall (or rise). Such definitive statements are common—but what’s almost always missing is statistical proof. And if you ...

Regression imputation is commonly used to compensate for item nonresponse when auxiliary data are available. It is common practice to compute survey estimators by treating imputed values as observed ...

This graph tells a very simple tale. Between 1997 and 2007, the rate of autism and organic food sales has risen at the same rate. Obviously, this chart goes to prove that autism and eating organic ...

This article proposes two estimators of the correlation coefficient, ρ, when statisticians will not construct a master file on individuals because of confidentiality issues. The approach depends on ...