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求助各位大佬,我想要求出超额收益波动率,一共有1799个事件,t是数据中的任意一天,首先用[t-65,t-5]数据运行图中的回归,得到四个因子的^系数并保存下来,然后将系数和mkt、smd、hml、umd四个因子日数据带入方程求出dif (-60,-30]和dif [-2,2]的超额收益和超额收益波动率。现在stata代码不知道该怎么写,求求大家了
id:事件序号 dif是距离事件日的天数 Rif=Ri.t-Rf.t是被解释变量
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  1. * Example generated by -dataex-. To install: ssc install dataex
  2. clear
  3. input float(id Date dif Rif mkt smb hml umd)
  4. 1 16981 -249 .052078 .02137009 -.0043066163 .007520704 .0043039783
  5. 1 16982 -248 -.000064 .0010023492 -.006480599 .0020309633 .005993066
  6. 1 16985 -247 .047724 .015596678 .0006308488-.0025510944 .0011852527
  7. 1 16986 -246 -.013578 -.010719895 .00614158 -.003272553 .006324243
  8. 1 16987 -245 -.029174 -.013248443 .007918657-.0018377814 -.004342544
  9. 1 16988 -244 .01228 .02099386 .005597643-.0021796455 .0023756386
  10. 1 16989 -243 -.024456 -.005217916 .011228447-.0019745869-.0010177405
  11. 1 16992 -242 .044577 .0036467754 .010279173-.0001863533 -.00466451
  12. 1 16993 -241 .001643 .00638595 .002371787-.0025646086 .007050771
  13. 1 16994 -240 .047716-.00042702365 -.0032663126-.0019032035 .016541027
  14. 1 16995 -239 -.035896 -.05326543 -.01356927 .0006197724 -.00037322505
  15. 1 16996 -238 .047232 .00853503 .0011591219 -.003185774-.0009343117
  16. 1 17000 -237 .011225 .003206067 .007969559 .00310947-.0032914525
  17. 1 17001 -236 -.044722 -.02366452 .00559456 .0018362793 -.007746547
  18. 1 17002 -235 .01496 .006610794 .006126282 .004579914 -.005587258
  19. 1 17003 -234 .018027 .007080259 -.0034552375-.0002868745 -.00016048527
  20. 1 17006 -233 -.000065 .002582812 .001877914 -.004901565-.0012045734
  21. 1 17007 -232 -.006688 .013399457 .00009883826-.0005038262 .003923059
  22. 1 17008 -231 -.011732 .0015891626 .006749664 .001659552 -.005878234
  23. 1 17009 -230 -.02536 -.011945813 -.0010561154 .0011993547 .0020017787
  24. 1 17010 -229 .003395 -.0080342125.000027017426 .0045711943 -.010268313
  25. 1 17013 -228 -.044893 -.03337659 -.008383183 .0003850865-.0088868365
  26. 1 17014 -227 .01257 -.010930745 -.0041169305 .006260375 -.003235953
  27. 1 17015 -226 .005283 -.003144201 -.0017289314-.0003254026-.0011171023
  28. 1 17016 -225 .007026 .0003751701 -.0009131577 .00486674-.0046484875
  29. 1 17020 -224-.031756002 -.017293055 -.011995342-.0040661735 .0009052916
  30. 1 17021 -223 .019934 .026184853 .007510923 .000339556 .0045334217
  31. 1 17022 -222 .007064 .0006089308 .0003530912 .0005776925 .0044861534
  32. 1 17023 -221 .035331998 .019061515 .001125625-.0011290314 .003781453
  33. 1 17024 -220 .001643 .0003869774 .00440011-.0003119819 .001324598
  34. 1 17027 -219 .005053 -.02535043 -.0045885695 .0003086686 -.005148496
  35. 1 17028 -218 .04917 .018293126 .0016225518 .0014903717 .00259298
  36. 1 17029 -217 .019351 .013546028 .0040387237 .001510783 .007098027
  37. 1 17030 -216 -.012766 -.007421249 .00003382491 -.00012905922.00014221268
  38. 1 17031 -215 .004755 -.003871461 -.0037773086 -.002799309-.0004334629
  39. 1 17034 -214 .007932001 .002803982 .002945923 .0010349347 .004912389
  40. 1 17035 -213 -.00483 .008678435 .00018683827 -.008121267 .008118993
  41. 1 17036 -212 .001527 -.0013229563 -.0030782684 -.002170448-.0003147806
  42. 1 17037 -211 .003116 .005657485 .0034123105 -.002620093 .000406447
  43. 1 17038 -210 .015804 .0016176646 -.000062186235-.0010761207 .003059218
  44. 1 17041 -209 .060869 .019577613 .003850117-.0030783894 .0031143655
  45. 1 17042 -208 -.013324 .0014324015 -.0027714584 -.001977788 .003043937
  46. 1 17043 -207 .037244 .0045253076 .005920006 .0003122466-.0014489858
  47. 1 17044 -206 -.007263 .004654274 .001569492 .006281798 .002477766
  48. 1 17045 -205 -.01891 -.014052986 -.00612658 .001591778-.0022010664
  49. 1 17048 -204 .022088 .01486295 .008778253-.0045177056-.0005700642
  50. 1 17049 -203 -.005849 .002614404 .002834372 -.003846509 -.001912606
  51. 1 17050 -202 -.016057 .004707384 .0009058221 -.00122086 .0015647794
  52. 1 17051 -201 -.008931 -.007242178 -.008450242-.0015174926 -.000447002
  53. 1 17052 -200 .010364 .003718955-.00030985035-.0040663346 .0004917067
  54. 1 17055 -199 .04123 .003902662 .0037040226 .0019190346 -.001327991
  55. 1 17056 -198 .002765 .010669993 -.004852366 .0017774855-.0036838476
  56. 1 17057 -197 .001344 -.00573523 -.007991893-.0003650304 -.006296869
  57. 1 17058 -196 -.012761 .0010780141 .0014418964 .0033827585 -.004675512
  58. 1 17059 -195 .035647 .013313144 -.0016056134 .0011727776 -.005335142
  59. 1 17062 -194 .009588 .010000376 .005693214 .002547221 .000915744
  60. 1 17063 -193 -.012362 .0017096227 .00028145537 -.005509745 .008111934
  61. 1 17064 -192 .046959 .0010597993 .004561652 -.003006972-.0003415093
  62. 1 17065 -191 .014464 .005630967 -.001925807 -.005080565-.0011124548
  63. 1 17066 -190 -.0039729998 -.008359238 -.0004269196 -.00702458 .007629251
  64. 1 17069 -189 -.011832 -.000030709834 .003652348 -.002581211 -.001467623
  65. 1 17070 -188 -.045041 -.005438435 .006656057 .0009060818-.0044751703
  66. 1 17071 -187 .011013 .008003063 .0011914548-.0016826575-.0008521067
  67. 1 17072 -186 .013632 .008692954 -.002939448 -.0058921 .005409763
  68. 1 17073 -185 .022906 .009377384 .0016187564 .0002143344 .00236861
  69. 1 17083 -184 -.022529 .016859768 .002683825 -.00026724418 .0015793816
  70. 1 17084 -183 -.032504 .003453229 .005282846 .003193536 .0012496737
  71. 1 17085 -182 .012498 .005748987 .0027703366 .0018154716-.0021978782
  72. 1 17086 -181 -.022141 -.006407714 -.006481728 .014173144 -.009303541
  73. 1 17087 -180 .008391 .002773826 .003321314 -.00516518 .0010712709
  74. 1 17090 -179 -.005666 -.00813142 .007811875 .006284709 -.00736589
  75. 1 17091 -178 .012585 -.004376638 .000913283 -.004697942 .005242524
  76. 1 17092 -177 .063815996 .013026098 .000197148-.0009145672 .003051696
  77. 1 17093 -176 .001232 .0045307297 .0021847654.00002646231 .006277786
  78. 1 17094 -175 .02861 -.0010203567 -.009183075-.0040813265 .010375295
  79. 1 17097 -174 -.01655 -.017277082 -.01867628 .003834171 .0046293046
  80. 1 17098 -173 .030855 .027752066 .00055703585 .004127421.00009670118
  81. 1 17099 -172 .004927 -.0009500707 -.006420951 -.003204731-.0021437635
  82. 1 17100 -171 .034753 -.0012803677 -.010283708-.0025282544 -.00023006715
  83. 1 17101 -170 -.014496 -.006451875 -.011798298 .0033503294 -.001916568
  84. 1 17104 -169 -.024463 .0014472185 -.006798932 .015353393 -.011516328
  85. 1 17105 -168 .023677 .019935695 -.008079535 .0011851997 -.00057725905
  86. 1 17106 -167 -.007399 .011025683 -.00996465 .006203613-.0012773303
  87. 1 17107 -166 -.006223 -.0016015503 -.0044938205 .008786561-.0030973726
  88. 1 17108 -165 .019729 .004588851 -.001708875 -.004700857-.0014762287
  89. 1 17111 -164 .039976 .01176108 -.025217054 .01991563 -.005948558
  90. 1 17112 -163 .02093 -.0019471124 -.01533764 -.002990076.00013722318
  91. 1 17113 -162 -.025217 -.011478556 .00951161 -.010188804 .00598387
  92. 1 17114 -161 .070265 .017826332 -.007354046 -.001207255 .004150621
  93. 1 17115 -160 .003211 -.015383073 -.011079432 -.006846345 .007132579
  94. 1 17118 -159 .006475 -.018751126 -.014161153 -.007919263 .002744476
  95. 1 17119 -158.0086010005 .00868146 .004977974-.0021636602 -.003470153
  96. 1 17120 -157 .06981599 .023619143 -.012796863 .007230419 .006038791
  97. 1 17121 -156 .019019 -.008351957 -.010435168 .0001705732 .001407659
  98. 1 17122 -155 .035427 .024819316 -.01668013 .00586596-.0003164349
  99. 1 17125 -154 .071352996 .023286404 -.031598248 -.003306754 .0005397289
  100. 1 17126 -153 -.006298 .01610052 -.010813599 -.004137757 .003219033
  101. 1 17127 -152 -.016176 .0019536586 .012267622 -.00537064-.0005866996
  102. 1 17128 -151 .013559 .004752338 -.0021814744 .007226943 .002784883
  103. 1 17129 -150-.031467002 -.0021940821 .014348796.00052272604 .005577222
  104. end
  105. format %tdCCYY-NN-DD Date
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