SAS will create the data set, name it \"prog1\" and save it in the \"work\" library. \"Prog 1\" has three numeric variables

INSTRUCTIONS TO CANDIDATES

ANSWER ALL QUESTIONS

SAS preparation session lab 1

 

* This is one way to write a note in SAS;

 

/* This is another way to write a note */

 

* This is a basic SAS program creating a temporary data set

SAS will create the data set, name it "prog1" and save it in the "work" library. "Prog 1" has three numeric variables

and three rows;

 

data prog1;

input var1 var2 _var3; datalines;

1 2 3

4 5 6

7 8 9

;

run;

 

* SAS data sets can have up to 412,977,617 variables & multiple millions of observations. Rows referred to as "observations" or "records";

 

* A variable name (e.g. "var1") can be a maximum

of 256 characters long. It must begin with either an alphabetic character or an underscore;

* An example of a data set with character variable; data prog2;

input var1 $ var2 _var3;

datalines; a 2 3

b 5 6

c 8 9

;

 

* Metadata;

* Labeling & formatting a variable;

* The label statement goes between the input and datalines statements;

 

data prog3;

input team $ ses ed_att $;

label team = "team's designation" ses = 'socioeconomic status' ed_att = 'educational attainment';

datalines; a 1 hs

b 2 sc

c 3 co

;

run;

 

proc format;

value $tm 'a' = 'team 1' 'b' = 'team 2' 'c' = 'team 3'; value stat 1 = 'lower' 2 = 'middle' 3 = 'upper';

value $ed 'hs' = 'high school' 'sc' = 'some college' 'co'

= 'college'; run;

 

proc print data = prog3 label;

format team $tm. ses stat. ed_att $ed.; run;

 

* Ok. Your turn

Create a sas data set using the data below. Give each variable a descriptive name.

Include a label and a format for the first and second variables;

 

c 1 80

c 2 88

c 3 80

c 4 99

c 5 100

t 6 70

t 7 72

t 8 83

 

t 9 71

t 10 94

 

* As written above, the data sets we created are temporary data sets. SAS will erase them

when we close the session. To keep the data set, store it in a permanent library;

 

Attachments:

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