How to select the observations randomly from a SAS dataset

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Question Posted / lavanya_dbts

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How to select the observations randomly from a SAS dataset..

Answer / srinath

Proc surveyselect;
this gives the random selection of observations.

Is This Answer Correct ?

23 Yes

1 No

How to select the observations randomly from a SAS dataset..

Answer / learner

By using ranuni function. for example you want select 30
percent of data randamly from a data set.

data x;
set y;
if ranuni(100)<.3 ;
run;

here 100 is the seed. the number generated depends on this
seed .

Is This Answer Correct ?

11 Yes

1 No

How to select the observations randomly from a SAS dataset..

Answer / srikanth

you can use the RANUNI function to select observations
randomly.

Ex:-

data test;
input number @@;
cards;
2.1 3.1 4 6 2.2 4.9 4 5 3 3.3 4 5 3 4.3 5 7 3 3 9 11
;

data test1;
set test;
random=ranuni(1);
run;

%let k=10;

PROC SORT DATA=TEST1;
BY random;/*SORT OBSERVATIONS*/
run;

DATA TEST2;
SET TEST2 (DROP=RANDOM);
IF _N_ LE &K;
RUN;

PROC PRINT ;
RUN;

Is This Answer Correct ?

8 Yes

6 No

How to select the observations randomly from a SAS dataset..

Answer / neel

By using the point function

Is This Answer Correct ?

1 Yes

1 No

How to select the observations randomly from a SAS dataset..

Answer / chowdary vamsi

using rununni function generate random sample observations

Is This Answer Correct ?

0 Yes

0 No

How to select the observations randomly from a SAS dataset..

Answer / name is no need

I think by using mod operator we can select the random
observations.
syntax:mod(_n_,number);

Is This Answer Correct ?

5 Yes

6 No

How to select the observations randomly from a SAS dataset..

Answer / ram

by using proc sort.

Is This Answer Correct ?

2 Yes

18 No

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