---------------------------------------------------------------------------------- name: log: C:\Users\LabProf01\Desktop\colgpa_log.log log type: text opened on: 24 May 2023, 17:11:11 . reg colGPA hsGPA ACT PC skipped Source | SS df MS Number of obs = 141 -------------+---------------------------------- F(4, 136) = 11.90 Model | 5.03143078 4 1.2578577 Prob > F = 0.0000 Residual | 14.3746687 136 .105696093 R-squared = 0.2593 -------------+---------------------------------- Adj R-squared = 0.2375 Total | 19.4060994 140 .138614996 Root MSE = .32511 ------------------------------------------------------------------------------ colGPA | Coef. Std. Err. t P>|t| [95% Conf. Interval] -------------+---------------------------------------------------------------- hsGPA | .4129522 .0924311 4.47 0.000 .2301642 .5957403 ACT | .013344 .0104437 1.28 0.204 -.0073091 .0339972 PC | .1244391 .0573115 2.17 0.032 .0111021 .2377762 skipped | -.0710336 .0262494 -2.71 0.008 -.1229435 -.0191238 _cons | 1.356509 .3275021 4.14 0.000 .7088537 2.004164 ------------------------------------------------------------------------------ . predict resid, res variable resid already defined r(110); . predict colgpa_hat variable colgpa_hat already defined r(110); . gen colgpa_hat2=colgpa_hat^2 variable colgpa_hat2 already defined r(110); . gen resid2=resid^2 variable resid2 already defined r(110); . test colgpa_hat colgpa_hat2 colgpa_hat not found r(111); . reg colGPA hsGPA ACT PC skipped, rob Linear regression Number of obs = 141 F(4, 136) = 12.22 Prob > F = 0.0000 R-squared = 0.2593 Root MSE = .32511 ------------------------------------------------------------------------------ | Robust colGPA | Coef. Std. Err. t P>|t| [95% Conf. Interval] -------------+---------------------------------------------------------------- hsGPA | .4129522 .0987852 4.18 0.000 .2175985 .608306 ACT | .013344 .0107198 1.24 0.215 -.0078551 .0345432 PC | .1244391 .0599858 2.07 0.040 .0058136 .2430647 skipped | -.0710336 .0264099 -2.69 0.008 -.1232608 -.0188064 _cons | 1.356509 .3423354 3.96 0.000 .6795199 2.033498 ------------------------------------------------------------------------------ . reg resid2 colgpa_hat colgpa_hat2 Source | SS df MS Number of obs = 141 -------------+---------------------------------- F(2, 138) = 3.58 Model | .109575839 2 .054787919 Prob > F = 0.0305 Residual | 2.1110548 138 .015297499 R-squared = 0.0493 -------------+---------------------------------- Adj R-squared = 0.0356 Total | 2.22063063 140 .015861647 Root MSE = .12368 ------------------------------------------------------------------------------ resid2 | Coef. Std. Err. t P>|t| [95% Conf. Interval] -------------+---------------------------------------------------------------- colgpa_hat | .1296036 1.316762 0.10 0.922 -2.474035 2.733242 colgpa_hat2 | .0029456 .2156601 0.01 0.989 -.4234799 .4293711 _cons | -.3218436 2.00584 -0.16 0.873 -4.287997 3.64431 ------------------------------------------------------------------------------ . predict resid2_hat variable resid2_hat already defined r(110); . reg colGPA hsGPA ACT PC skipped [aweight=1/resid2_hat] (sum of wgt is 1,523.16431934202) Source | SS df MS Number of obs = 141 -------------+---------------------------------- F(4, 136) = 15.01 Model | 5.70396891 4 1.42599223 Prob > F = 0.0000 Residual | 12.9238237 136 .095028116 R-squared = 0.3062 -------------+---------------------------------- Adj R-squared = 0.2858 Total | 18.6277926 140 .133055662 Root MSE = .30827 ------------------------------------------------------------------------------ colGPA | Coef. Std. Err. t P>|t| [95% Conf. Interval] -------------+---------------------------------------------------------------- hsGPA | .4025059 .0833616 4.83 0.000 .2376532 .5673586 ACT | .013162 .0098273 1.34 0.183 -.0062721 .0325962 PC | .1260048 .0563391 2.24 0.027 .0145909 .2374187 skipped | -.0763653 .0221727 -3.44 0.001 -.1202131 -.0325174 _cons | 1.401564 .2984304 4.70 0.000 .8113994 1.991728 ------------------------------------------------------------------------------ . log close name: log: C:\Users\LabProf01\Desktop\colgpa_log.log log type: text closed on: 24 May 2023, 17:12:04 ----------------------------------------------------------------------------------