对一组数据 各公司进出前后(进入为1,出去为0)的OPM进行T检验的时候,应该如何写命令,才能把带有星号的检验结果导出至Excel中。数据如下:我用了命令 ttest OPM1, by(前后)
- * Example generated by -dataex-. To install: ssc install dataex
- clear
- input str6 Stkcd byte 前后 double(OPM1 LEV)
- "" 0 .049080152064561844 .6474318504333496
- "" 0 .046104613691568375 .676603376865387
- "" 0 .031127769500017166 .687501072883606
- "" 0 .024927297607064247 .7333773374557495
- "600837" 1 .03472551703453064 .6939893960952759
- "600837" 1 .031278688460588455 .7360393404960632
- "600837" 1 .03751165792346001 .7339509725570679
- "600837" 1 .034589048475027084 .7609795331954956
- "" 0 -.4552612900733948 .531105101108551
- "" 0 -.5385058522224426 .6268149018287659
- "" 0 -.6843624711036682 .6867863535881043
- "" 0 -.5783684849739075 .6256884932518005
- "600000" 1 .3358534276485443 .6286255717277527
- "600000" 1 .13862112164497375 .698600172996521
- "600000" 1 .23278334736824036 .6849150061607361
- "600000" 1 .22670897841453552 .7053866386413574
- "" 0 .060710471123456955 .6615182757377625
- "" 0 .08657451719045639 .6128509640693665
- "" 0 .08642210066318512 .6427736282348633
- "" 0 .09850133955478668 .5862739086151123
- "600036" 1 .0959208756685257 .5822270512580872
- "600036" 1 .090940460562706 .5472130179405212
- "600036" 1 .08174129575490952 .5428594350814819
- "600036" 1 .06900310516357422 .5407168865203857
- "" 0 .4012262523174286 .49384501576423645
- "" 0 .5239413380622864 .45702195167541504
- "" 0 .5006824135780335 .44977161288261414
- "" 0 .6327997446060181 .436617374420166
- "000728" 1 -.3406066298484802 .42783209681510925
- "000728" 1 .3660716414451599 .4311063289642334
- "000728" 1 .15578694641590118 .3835078179836273
- "000728" 1 .0021643550135195255 .41871100664138794
- "" 0 .5072428584098816 .48958176374435425
- "" 0 .4656664729118347 .4783460199832916
- "" 0 .5275695323944092 .45559242367744446
- "" 0 .5436580181121826 .5474852919578552
- "601198" 1 -.22508744895458221 .44560036063194275
- "601198" 1 -.23298804461956024 .4458712041378021
- "601198" 1 -.16769781708717346 .4675453305244446
- "601198" 1 .45557084679603577 .4651912450790405
- end


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