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# day7prlm - 2/24/12 1 PADP 8130: Linear Models Specifca(on...

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Unformatted text preview: 2/24/12 1 PADP 8130: Linear Models Specifca(on PRACTICE Angela Fer¡g, Ph.D. [email protected] Variable Tests . gen lnfaminc=log(faminc) (53 missing values generated) . replace lnfaminc=0 if faminc<1 (52 real changes made) . gen femage=femalehd*agehd (1 missing value generated) . gen blmarr=black*marriedhd (77 missing values generated) . reg lnfaminc agehd femalehd femage marriedhd black hisp blmarr hsdropout somecoll collgrad 2/24/12 2 One interac:on is not needed, but other should be kept Source | SS df MS Number of obs = 8235-------------+------------------------------ F( 10, 8224) = 307.20 Model | 3823.5114 10 382.35114 Prob > F = 0.0000 Residual | 10235.9073 8224 1.24463854 R-squared = 0.2720-------------+------------------------------ Adj R-squared = 0.2711 Total | 14059.4187 8234 1.70748345 Root MSE = 1.1156------------------------------------------------------------------------------ lnfaminc | Coef. Std. Err. t P>|t| [95% Conf. Interval]-------------+---------------------------------------------------------------- agehd | .0005042 .0009946 0.51 0.612 -.0014454 .0024539 femalehd | -.2912241 .075556 -3.85 0.000 -.4393329 -.1431153 femage | .0018561 .0015482 1.20 0.231 -.0011787 .0048909 marriedhd | .7369041 .0366788 20.09 0.000 .6650044 .8088038 black | -.3601734 .0353564 -10.19 0.000 -.4294808 -.290866 hisp | -.0352128 .0482111 -0.73 0.465 -.1297187 .0592932 blmarr | .1778605 .056274 3.16 0.002 .0675492 .2881717 hsdropout | -.4504004 .0362061 -12.44 0.000 -.5213734 -.3794274 somecoll | .2569676 .0326361 7.87 0.000 .1929927 .3209426 collgrad | .5835823 .0341799 17.07 0.000 .516581 .6505836 _cons | 10.321 .0527081 195.81 0.000 10.21768 10....
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## This note was uploaded on 03/28/2012 for the course PADP 8130 taught by Professor Fertig during the Spring '12 term at LSU.

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day7prlm - 2/24/12 1 PADP 8130: Linear Models Specifca(on...

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