▁chi - squ ared ▁test , ▁name ▁given ▁to ▁some ▁tests ▁using ▁chi - squ ared ▁distribution ▁chi - squ ared ▁target ▁models , ▁a ▁mathematical ▁model ▁used ▁in ▁rad ar ▁cross - section <0x0A> </s> ▁Bra ut ig am ▁or ▁Br ä ut ig am ▁is ▁a ▁surname . ▁Notable ▁people ▁with ▁the ▁surname ▁include : ▁▁ ▁Harry ▁Bra ut ig am ▁( 1 9 4 8 – 2 0 0 8 ), ▁Nic ar agu an ▁econom ist ▁▁ ▁Johan ▁Bra ut ig am ▁( 1 8 7 8 – 1 9 6 2 ), ▁Dutch ▁trade ▁union ist ▁ ▁Otto ▁Br ä ut ig am ▁( 1 8 9 5 – 1 9 9 2 ), ▁German ▁diplom at ▁ ▁Perry ▁Br ä ut ig am ▁( born ▁ 1 9 6 3 ), ▁German ▁footballer ▁and ▁coach ▁ ▁Ron ald ▁Bra ut ig am ▁( born ▁ 1 9 5 4 ), ▁Dutch ▁pian ist ▁ ▁See ▁also ▁ ▁Richard ▁Bra ut igan ▁( 1 9 3 5 – 1 9 8 4 ), ▁novel ist <0x0A> </s> ▁Lewis ▁H . ▁Walter ▁( Dec ember ▁ 1 4 , ▁ 1 9 0 5 ▁– ▁September ▁ 2 9 , ▁ 1 9 8 2 ) ▁was ▁an ▁American ▁sports ▁journalist . ▁A ▁column ist ▁for ▁Detroit ▁Times ▁and ▁Detroit ▁Free ▁Press , ▁he ▁won ▁the ▁El mer ▁Fer g us on ▁Memorial ▁Award ▁in ▁ 1 9 8 4 ▁and ▁is ▁a ▁member ▁of ▁the ▁media ▁section ▁of