08-09-2016 11:06 AM
If a variable is normaly distributed then we expect
68% of the observations fall within mean+/-1.standard deviation
95% of the observations fall within mean+/-2.standard deviation
99% of the observations fall within mean+/-3.standard deviation
08-09-2016 11:56 AM
Could I ask then in future that questions be elaborated on providing where possible, examples of what is needed. If indeed this is to do with normal distribution then the appropriate sub forum would be the statistics section, this is posted in Base SAS Programming with no context.
08-09-2016 12:54 PM
@RW9, I didn't understand the question either. But I wouldn't be a member of this forum if there had been an entry exam or stringent moderation when I joined.