00877naa a2200121 a 450000100080000000500110000800800410001910000160006024500490007626000090012552005700013477300510070416493932000-08-21       1977    bl ---       0--  u    #d1 aLEVI, M. D.  aMeasurement erros and bounded ols estimates.  c1977  aIn a multiple linear regression with one mismeasured independent variable, all coefficients are asymptotically biased. It is shown how in ols, an examination of the sign of the cofactors of the variance-covariance matrix of measured values can used to obtain large sample bounds on the coeficients. The method involves forward regression and regression on the mismeasured variable. Boounds are generally obtained on the coefficient of the mismeasured variable and often obtained on the remaining ocoefficients with no knowledge of the size of the measurement error.  tJournal of Econometricsgv.6, p.165-171, 1977.