我记得的Base题

shiyiming

From SASOR:


I just took the Base test. I passed it with a low score  
I have a poor memory. Here are a few of my recall or suggestion.

1. length of a variable when with substr(), trim() and scan()
2. SET A (IN=a_in) B (IN=b_in); IF a_in and b_in;
Ask: how many observations?
3. relation between "retain" and sum
4. Data _null_; SET a; PUT name $15.; RUN;
Ask: where is the output? Log, Output and/or raw data file. (I don't know  )
5. mdy(1,3,1960)=2 or 3? So detailed!
6. difference between ORDER and GROUP in Proc Report
7. Suppse data set AA has 3 observations and 2 variables.
DATA BB;
DO i=1 to 3;
SET AA; /* Yes, SET is within the loop */
var3=var1+var2; /* var1 and var2 are the two variables in AA */
END;
RUN;
Ask: how many observations and how many variable in BB?

That's all what is I think worth mentioning and what I can remember. I'll come back if I could further recall somethings.

Now I am gonna move onto Adv.

Good luck for all Base brothers!

shiyiming

Thank you very much

shiyiming

太好了，多谢！ 其他考过的人能否也分享一下记得的题？