It, like your bizarre idea of luck, actually refers to statistical concepts.

Numerous statistical concepts measure the degree of financial correlations.

Affordability is a statistical concept measuring the ability of American families to buy a home.

An introduction to statistical concepts for education and behavioral sciences (2nd ed).

He also created the statistical concept of correlation and widely promoted regression toward the mean.

A number of statistical concepts have had an important impact on a wide range of sciences.

He created the statistical concepts of normal distribution, correlation and regression toward the mean.

He spent 14 happy years in Graz and it was there that he developed his statistical concept of nature.

Statisticians have proposed what they consider the most important statistical concepts for educated citizens.

For the statistical concept and test, see Granger cause.