what factors affect whether $alpha_1approxbeta_3? quizlet how does adding variables affect linear regression what factors affect a linear regression? how does the coefficients on the equation affect the regression what factor affects whether alpha_1approxbeta_1$? what factors affect linear regressions what factors affect whether what factor is important for a linear regression how does additional variable affect regression model what factors affect whether $alpha_1approxbeta_3> what factors affect whether linear regression is linear? what factors affect a linear regression what factors affect whether $alpha_1approxbeta_2y+epsilon? what factors effect whether the equation is linear regression which factors affect whether either model predicts z$ how does adding extra variables affect linear regression how does the extra variable affect regression? how do variables affect linear regression how does adding extra variables affect regressions how do extra variables affect linear regression