请教各位前辈,如何对一个月内的日度数据求平方和?已附上三个月的样本,求3,4,5月内日度数据return的平方和,生成新的变量。非常感谢!
- * Example generated by -dataex-. For more info, type help dataex
- clear
- input double return float(year month day)
- -.607672439979101 1989 3 1
- .984317036393633 1989 3 2
- .423307289617191 1989 3 3
- 1.23894656533476 1989 3 6
- -.319359859382739 1989 3 7
- .0714319297076215 1989 3 8
- -.0510175025442372 1989 3 9
- -.357863405240177 1989 3 10
- .829655201024692 1989 3 13
- -.0609667035425864 1989 3 14
- .517058291110039 1989 3 15
- .929361650556703 1989 3 16
- -2.28000350016523 1989 3 17
- -.950896757908559 1989 3 20
- .485153295686568 1989 3 21
- -.288748278447936 1989 3 22
- -.521159823657324 1989 3 23
- .548701558045827 1989 3 27
- .350415706492057 1989 3 28
- .260304286926338 1989 3 29
- .0581267653458006 1989 3 30
- .800156149153963 1989 3 31
- .514164098012415 1989 4 3
- -.365055999892849 1989 4 4
- .314425757772429 1989 4 5
- -.32119480612005 1989 4 6
- .631277295662524 1989 4 7
- -.0168337627825643 1989 4 10
- .463400781546763 1989 4 11
- .16736966373978 1989 4 12
- -.870022139039061 1989 4 13
- 1.65956404304115 1989 4 14
- .119392469033297 1989 4 17
- 1.4150985048543 1989 4 18
- .368578472720226 1989 4 19
- -.313037724653497 1989 4 20
- 1.11075616585285 1989 4 21
- -.297584893503355 1989 4 24
- -.63044599614459 1989 4 25
- .058660216143469 1989 4 26
- .859681240089837 1989 4 27
- .0193882626511765 1989 4 28
- -.168084593066009 1989 5 1
- -.324023359188441 1989 5 2
- .0129840332709463 1989 5 3
- -.126642656327558 1989 5 4
- -.0520016933815981 1989 5 5
- -.524759614055803 1989 5 8
- -.265056192531965 1989 5 9
- .199671422656599 1989 5 10
- .375365271419259 1989 5 11
- 2.21983821881295 1989 5 12
- .736513805537608 1989 5 15
- -.278729749636053 1989 5 16
- .695372915556102 1989 5 17
- .154218298169794 1989 5 18
- 1.02314343386638 1989 5 19
- .230098978687287 1989 5 22
- -1.14322778686375 1989 5 23
- .257273687447323 1989 5 24
- .00939919434328473 1989 5 25
- .755351292877648 1989 5 26
- -.792963715310968 1989 5 30
- .459684988794251 1989 5 31
- end
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