search for: pre_sd

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2010 Jul 13
1
Barplots
Hi R, I am examining the mean returns 10 days before and 10 days after a event. Now I have several events the corresponding pre and post event 10 day mean returns... something like this Pre_Start Pre_End Pre_Mean Pre_SD Post_Start Post_End Post_Mean Post_SD 1 2002-02-22 2002-03-08 0.004968027 0.017443954 2002-03-12 2002-03-25 0.0004099697 0.012529438 2 2002-04-25 2002-05-08 -0.006371706 0.011008257 20...