Help using Base SAS procedures

Proc Freq

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Occasional Contributor bgs
Occasional Contributor
Posts: 15

Proc Freq

[ Edited ]

Besides providing frequency, percentage , cumulative frequency and cumulative percentage - what is the practical application or where is proc freq used.

 

Please do feel free to provide examples of its usage.

Super User
Super User
Posts: 7,430

Re: Proc Freq

Sorry not sure what the question is (was really tempted to put a bleep in there)?  Look at the SAS documentation for what a procedure is used for, what its parameters and outputs are etc.  Each procedure is designed with a purpose, even if it may seem very similar to means/summary etc.

Occasional Contributor bgs
Occasional Contributor
Posts: 15

Re: Proc Freq

What I meant was what are the uses of proc freq on a practical level ?
What use is proc freq to a user?
Super User
Super User
Posts: 7,430

Re: Proc Freq

Its very useful if you want to get frequency counts?

Super User
Posts: 10,550

Re: Proc Freq

In addition is often use proc freq to:

 

Check skip patterns of responses in survey data or any data entry system. Example: Responses to question 10 should match numbers or response categories 3 and 4 to Question 6. Table q10*Q6; will show me right away if there is a data issue.

 

Proc freq is almost always the first tool I look to when doing any kind of data cleaning or just getting to know new data set.

It may provide voluminous data if there are lots of continuous variables but the syntax simplicity can't be beat:

Proc freq data=mydata; run;

I know I'm going to get lots, but I get to see values, labels if assigned, how many missing values for each variable (VERY helpful if there shouldn't be any for one or more variables). And sometimes just plain data entry stupidity ( or a system induced behavior that assigned many supposedly poor clients with monthly incomes of 83333).

 

Verify that I have all values of a variable considered when designing a custom format.

Contributor
Posts: 53

Re: Proc Freq

PROC FREQ is also useful to do Univariate Analysis  to identify significant categorical variables

Respected Advisor
Posts: 3,777

Re: Proc Freq

Your question can be answer most effectively by reading the bleeping documentation where there are numerous examples of its usage .
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