Hi Again! Hope this is the last time I'm forced to bother you, as the sas help doc is for me I wanted to test for heteroscedasticity in my panel data sample and eventually correct it. My model: FE=FELO FEUP FE_L FELOWER FEUPER; FELO - dummy (1 if below FE_L Q1) FEUP - dummy (1 if above FE_L Q1) FE_L - laged FE FELOWER = FELO*FE_L FEUPER =FEUP*FE_L On SAS Help I can only find the example with "incomes" which is not as complicated as my... I would really appreciate your time and concern. ... View more

Hello again! I would like to ask you how to get from "have" to "wanna" base. Have: Company, Year, A,2001 A,2002 A,2003 A,2004 B,2001 B,2002 B,2003 C,2001 C,2002 C,2003 C,2004 Wanna: Company, Year, A,2001 A,2002 A,2003 A,2004 C,2001 C,2002 C,2003 C,2004 I know the logic, but cannot really figure out the code... I should assign e.g. item for every observation and delete each company which has item number <4 Thank you in advance! ... View more

Hi everyone! I operate with estimates of annual earnings data (panel data). I have company, forecaster, time, forecast, earnings realizations DATA TEST; INPUT company$ scenario year earnings_Poject realized; cards; A 1 1995 10 9 A 2 1995 4 9 A 1 1996 8 7 A 2 1996 5 7 A 1 1997 11 12 A 2 1997 10 12 B 1 1995 20 22 B 2 1995 17 22 B 1 1996 19 20 B 2 1996 26 20 B 1 1997 29 25 B 2 1997 23 25 ; Now I wanted to assign a dummy variable to the observations. The company which earnings change is higher in the last year should receive "1". And so for each year. E.g. The case for 1995: A,1,1995,10,9 <- in 1996 gets "1" A,2,1995,4,9 <- in 1996 gets "0" B,1,1995,20,22 <- in 1996 gets "1" B,2,1995,17,22 <- in 1996 gets "0" and so on for each year... I would appreciate any help as the issue gives me only sleepless nights... ... View more