topic Re: using Array/do to assign a letter grade. in New SAS User

using Array/do to assign a letter grade.

klj81 — Thu, 21 Feb 2019 18:20:28 GMT

Hello!

For an assignment, I have a data set that I have to round number grades, and then use array and do statements to assign a letter grade.

So far I have

data hwweek4;

set sasuser.detail;

Math1=round(Math, 1);

Science1=round(Science, 1);

PE1=round(PE, 1);

Reading1=round (reading, 1);

drop math science pe reading;

run;

Now what I need to do with this data set is to create new columns with a grade for each of these subjects using array and do statements.

If grade is above 90 then Grade= A

If grade is 75-79 then Grade is a B

If Grade is 60-74 then Grade is C

Below 60 but not missing is a D

Re: using Array/do to assign a letter grade.

Reeza — Thu, 21 Feb 2019 18:25:24 GMT

1. Create two arrays for your subjects numerical grade and one for their alphabetical grade

2. Write a series of IF statements for one variable first

2. Add a DO loop around it.

4. Change the one variable to be arrayName(i) instead.

Or do this in one line with a format.

@klj81 wrote:

Hello!

For an assignment, I have a data set that I have to round number grades, and then use array and do statements to assign a letter grade.

So far I have

data hwweek4;

set sasuser.detail;

Math1=round(Math, 1);

Science1=round(Science, 1);

PE1=round(PE, 1);

Reading1=round (reading, 1);

drop math science pe reading;

run;

Now what I need to do with this data set is to create new columns with a grade for each of these subjects using array and do statements.

If grade is above 90 then Grade= A

If grade is 75-79 then Grade is a B

If Grade is 60-74 then Grade is C

Below 60 but not missing is a D

Re: using Array/do to assign a letter grade.

Jagadishkatam — Thu, 21 Feb 2019 18:38:44 GMT

I took the example sashelp.class and developed the code as per your requirement.

Please check and update as per your data and test

data class;
set sashelp.class;
array grades(2)$ heightgrade weightgrade;
array result1(2) height weight;
array result2(2) height2 weight2;
do i = 1 to 2;
if result1(i) ne . then result2(i)=round(result1(i),1);
if result2(i)>90 then grades(i)='A';
else if 75<=result2(i)<=89  then grades(i)='B';
else if 60<=result2(i)<=74 then grades(i)='C';
else if .<result2(i)<60 then grades(i)='D';
end;
run;

Re: using Array/do to assign a letter grade.

klj81 — Thu, 21 Feb 2019 18:38:59 GMT

Thanks for the reply. I am very new to SAS and not sure how to create the arrays or do loop.

I have been trying to find examples of how to write the code and the proper syntax but have been trouble finding one.

Re: using Array/do to assign a letter grade.

Reeza — Thu, 21 Feb 2019 18:43:19 GMT

https://stats.idre.ucla.edu/sas/seminars/sas-arrays/

@klj81 wrote:

Thanks for the reply. I am very new to SAS and not sure how to create the arrays or do loop.

I have been trying to find examples of how to write the code and the proper syntax but have been trouble finding one.

Re: using Array/do to assign a letter grade.

klj81 — Thu, 21 Feb 2019 18:58:12 GMT

This worked perfectly for me..

thank you so much I really appreciate your help!