claim: Temple Grandin stars Claire Danes as a stormtrooper.
evidence: In econometrics , the Frisch -- Waugh -- Lovell -LRB- FWL -RRB- theorem is named after the econometricians Ragnar Frisch , Frederick V. Waugh , and Michael C. Lovell .. econometrics. econometrics. Ragnar Frisch. Ragnar Frisch. Frederick V. Waugh. Frederick V. Waugh. Michael C. Lovell. Michael C. Lovell. The Frisch -- Waugh -- Lovell theorem states that if the regression we are concerned with is  :. regression. linear regression. where and are and matrices respectively and where and are conformable , then the estimate of will be the same as the estimate of it from a modified regression of the form  :. regression. linear regression. matrices. Matrix ( mathematics ). conformable. conformable matrix. where projects onto the orthogonal complement of the image of the projection matrix .. orthogonal complement. orthogonal complement. image. Image ( mathematics ). projection matrix. projection matrix. Equivalently , MX1 projects onto the orthogonal complement of the column space of X1 .. orthogonal complement. orthogonal complement. Specifically ,. known as the annihilator matrix , or orthogonal projection matrix .. projection matrix. projection matrix. This result implies that all these secondary regressions are unnecessary  : using projection matrices to make the explanatory variables orthogonal to each other will lead to the same results as running the regression with all non-orthogonal explanators included .. regression. linear regression. matrices. Matrix ( mathematics )