Code:
areg roa c.ownership##c.ownership leverage firmage firmsize, a(firm)
How can I plot a quadratic line between roa and ownership while controlling all the rest variables constant at their means? I found some options from graph - twoway, but it seems only predict the relation between roa and ownership without considering the impact of other variables
Thanks for any comment
Code:
* Example generated by -dataex-. For more info, type help dataex clear input long firm double(roa leverage firmage firmsize ownership) 4 .05787033623352358 .4607225863260322 2.772588722239781 19.218227600266285 .5232 4 .0321234965736189 .4601395135252982 2.8903717578961645 19.28725653955515 .5236000000000001 4 -.11918624495170212 .3588437880368989 2.995732273553991 18.9630199009463 .47929999999999995 4 .01495393978372191 .4504149833158276 3.044522437723423 19.135122760068622 .3672 4 -.06843544150433355 .4917934111961387 3.1354942159291497 18.9630199009463 .2608 4 .019662891675855866 .6103675476223739 3.1780538303479458 19.255813734390493 0 4 .046830003727583745 .2949351535993749 3.258096538021482 19.095191436359503 0 4 .04050635388779153 .2325276091520232 3.295836866004329 19.077752816822542 0 4 .023938467922043048 .4032394211408936 3.332204510175204 19.30507651488318 0 4 .046188643554358366 .5347544682054719 3.367295829986474 19.639392142978075 0 4 .01719991819670127 .5904017152495257 3.4011973816621555 19.803653362037466 0 4 .1775298333690193 .20345630761888872 3.433987204485146 19.22588925800566 .009300000000000001 4 .02191692926187318 .31524660751399686 3.433987204485146 19.409642943364215 0 4 -.061543475694888994 .4779659365925319 3.433987204485146 19.67680226667089 0 4 -.0024115198348312527 .0602434295383638 3.433987204485146 21.125051026612525 0 5 -.03745258992845414 .4329653499047152 2.4849066497880004 21.37783590458201 .0625 5 .0005171686877404424 .47957627696477384 2.6390573296152584 21.30032987497388 .0625 5 .0009335747688180074 .5093521462642073 2.70805020110221 21.316929617074006 .0625 5 -.10947926941264176 .5983874198978687 2.772588722239781 21.22032107153577 .0625 5 .035869482949014195 .5408640835784261 2.833213344056216 21.14741778140122 .043 5 .053104612201860295 .4850050686292299 2.8903717578961645 21.099661757017564 .042 5 .007559023553588451 .45864512288376236 2.9444389791664403 21.05187239719703 .0364 5 -.03708261410159387 .4675749549866466 2.995732273553991 21.00029428216922 .0364 5 -.003421735983836361 .4779603182432544 3.044522437723423 20.980701515308343 .0364 5 .00905503454132357 .4764843410624268 3.091042453358316 20.95484265861465 .0364 5 .016686805744591075 .483141538409433 3.1354942159291497 21.000672107227555 .0364 5 -.035624123614119804 .4748309447752741 3.1780538303479458 20.89608736871081 .0364 5 .03158343984215735 .5099635880102232 3.2188758248682006 21.03563843017662 .0364 5 -.024626937110126847 .44703998898092584 3.258096538021482 21.50899620535022 .0288 5 .04628077822456593 .46370847966123363 3.295836866004329 21.65039180470303 .0288 5 .007876100430552625 .5177473589674079 3.332204510175204 21.792140301952397 .0155 5 .050217034684912974 .49403993639847327 3.367295829986474 21.861554945892184 0 5 .058874672135832556 .42533743759104903 3.4011973816621555 21.832435854914394 .0088 6 .036033819874841805 .6663128608340783 2.4849066497880004 22.055054167952534 .2839 6 .03137663053046068 .6840094020756348 2.5649493574615367 22.16284912999035 .2839 6 -.07754126498152206 .7276308729960651 2.70805020110221 22.101588925663833 .285 6 .01213039737059797 .7189990036601428 2.772588722239781 22.114683010213927 .2839 6 .04082244446876744 .5575793748960657 2.833213344056216 21.660563172367947 .2839 6 .07381351515660856 .54558160744419 2.8903717578961645 21.794481355021016 .2162 6 .04532762424723061 .6774184371510349 2.9444389791664403 22.440379192654035 .20170000000000002 6 .025367310959577047 .7166751445693527 2.995732273553991 22.50184589296331 .1965 6 .04609759347852708 .6985768064896655 3.044522437723423 22.70730098027619 .18760000000000002 6 .057942059022990655 .7014206033085816 3.091042453358316 22.871335447618527 .2574 6 .05216514790634165 .6528552397639044 3.1354942159291497 22.842165330871687 .2574 6 .06738054038720612 .6201650001341875 3.1780538303479458 22.95793928724029 .26680000000000004 6 .07002386641567787 .5799717502905758 3.2188758248682006 23.022661852734036 .30379999999999996 6 .04360112953523529 .6414202485779869 3.258096538021482 23.187392871472024 .34509999999999996 6 .034540541559403316 .6461507723496202 3.295836866004329 23.26514371434046 .3751 6 .06103667380740991 .6104992056557073 3.332204510175204 23.30123662561863 .3751 6 .06244191741112164 .5656477276222713 3.367295829986474 23.298921622382668 .3751 6 .06819427734297234 .5282362718093485 3.4011973816621555 23.32867243452097 .40509999999999996 6 .05354384054264582 .5446121032519958 3.433987204485146 23.4798090692308 .4059 7 -.1876207447354162 .8550579006279933 2.5649493574615367 20.67395924097653 .3296 7 .011558831482141015 .829789863944599 2.6390573296152584 20.820550034340794 .3297 7 .014203391636424765 .7634611673488952 2.772588722239781 20.834524686173463 .049699999999999994 7 -.1472548268373538 .9092556112753906 2.833213344056216 20.77055036557721 .049699999999999994 7 .012049352855845335 .8729908432673958 2.8903717578961645 20.565779312009504 .049699999999999994 7 -.12364768107203755 .9787454482313142 2.9444389791664403 20.507442411057877 .038599999999999995 7 .01177949227374375 1.011333903766873 2.995732273553991 20.41834662505445 0 7 -.10645577219450246 1.1226146881264438 3.044522437723423 20.23003515965535 0 7 .05621334127464616 1.1498988601543951 3.091042453358316 19.710661293610627 0 7 .06527903160641156 1.098531029043014 3.1354942159291497 19.621914504791228 0 7 .022930988812767884 .19342039413519121 3.1780538303479458 19.708301040554044 0 7 .005614041578245276 .6241584231498458 3.2188758248682006 20.48713836630509 0 7 .028639181838631657 .46275425805767784 3.258096538021482 20.303973452300507 .050100000000000006 7 -.049025421173671084 .4742943653974571 3.295836866004329 20.338963088573255 .0195 7 .027560054552458434 .22384748126113732 3.332204510175204 19.99005577851841 .01 7 .1585790901726705 .1499620643710975 3.367295829986474 20.0584489277492 0 7 .0017960226238898176 .11802889574425025 3.4011973816621555 19.908347763948512 0 7 -.3601920345168437 .6434306664550695 3.433987204485146 20.115764092598607 0 7 .041651386601188126 .6012610560101671 3.433987204485146 20.095332113871997 0 9 .014174241181624888 .6786233468928654 2.4849066497880004 22.121045561334835 .2279 9 .008418301990424284 .691097729198897 2.5649493574615367 22.136795228936446 .1115 9 .023321415043949564 .6498250993938895 2.772588722239781 22.310075256228277 .1116 9 .0284333842103851 .646418839799356 2.833213344056216 22.430015974029505 .1115 9 .056781033676623086 .5912805988392213 2.8903717578961645 22.48787671621316 .1115 9 .04463417243585205 .5899988771702805 2.9444389791664403 22.52889364723692 .0695 9 .05446466053939489 .6020921099241675 2.995732273553991 22.73843677607795 .0678 9 .04405083092833007 .629529979089809 3.044522437723423 23.028312678498494 .08070000000000001 9 .03227960025216681 .6504021055512751 3.091042453358316 23.190146785426087 .0623 9 .02333106279716629 .6436690392861527 3.1354942159291497 23.30130833247465 .0623 9 .03262986444719718 .6287977618807954 3.1780538303479458 23.33420300252358 .0623 9 .03209050794474974 .6289341671336012 3.2188758248682006 23.412846220969694 .0623 9 .053323504502728505 .6382021174383912 3.258096538021482 23.61994726945558 .0557 9 .019399877156343247 .6237910675039087 3.295836866004329 23.797019970306426 .0557 9 .011923784396394046 .6331205554612953 3.332204510175204 24.023148762531836 .0557 9 .022280568703266983 .6498955892815201 3.367295829986474 24.119444013660647 .0557 9 .023563756371373736 .6455591121139688 3.4011973816621555 24.131432397235574 .0557 10 .043489349330943755 .6021208666376154 2.772588722239781 20.58029715300303 .2062 10 -.2338764404240956 .7912486608797766 2.8903717578961645 19.6832583891498 .2062 10 .04153607427746676 .6386542830331817 3.091042453358316 19.261623544009687 .2062 10 .018060520974888063 .5974202642586004 3.1354942159291497 19.173046549814014 .2062 10 .014986191541823363 .6022387853497403 3.2188758248682006 19.29523169910633 .2062 10 .0037077236091027977 .3581516419214527 3.258096538021482 20.750676322926644 .09160000000000001 10 -.09365409043696454 .31412842340973274 3.295836866004329 20.505381472346333 .0638 10 .0038693136262392333 .5795766968251589 3.332204510175204 22.364625370313675 .06 10 .008022458238600682 .5447209317979287 3.367295829986474 22.302922166104075 .06 10 -.3381495394535607 .6201161017598043 3.4011973816621555 21.856328843229758 .0535 10 -.22195259878634666 .8195049001496428 3.433987204485146 21.90905785706952 .0535 10 .029388978524123463 .8243732730012927 3.433987204485146 22.179939449414093 .0535 end
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