topic Re: Descriptive Statistics in SAS Programming

Descriptive Statistics

Goffy123 — Mon, 13 Aug 2018 19:35:51 GMT

Compute Descriptive Statistics of score by review_weekday?

This is my question any help into what to do in code?

Re: Descriptive Statistics

Reeza — Mon, 13 Aug 2018 19:40:30 GMT

Assuming the variable is numeric you would use PROC MEANS, here's a fully worked example, copy and paste into SAS and run to see the example. If you have categorical data, it's a different process.

*Create summary statistics for a dataset by a 'grouping' variable and store it in a dataset;

*Generate sample fake data;
data have;
	input ID          feature1         feature2         feature3;
	cards;
1               7.72               5.43              4.35
1               5.54               2.25              8.22 
1               4.43               6.75              2.22
1               3.22               3.21              7.31
2               6.72               2.86              6.11
2               5.89               4.25              5.25 
2               3.43               7.30              8.21
2               1.22               3.55              6.55

;
run;

*ensure sort before means;
proc sort data=have;
by id;
run;

*Create summary data;
proc means data=have noprint;
	by id;
	var feature1-feature3;
	output out=want median= var= mean= /autoname;
run;

*Show for display;
proc print data=want;
run;

*First done here:https://communities.sas.com/t5/General-SAS-Programming/Getting-creating-new-summary-variables-longitudinal-data/m-p/347940/highlight/false#M44842;
*Another way to present data is as follows;

proc means data=have stackods nway n min max mean median std p5 p95;
    by id;
    var feature1-feature3;
    ods output summary=want2;
run;

*Show for display;
proc print data=want2;
run;

https://github.com/statgeek/SAS-Tutorials/blob/master/proc_means_basic.sas

@Goffy123 wrote:

Compute Descriptive Statistics of score by review_weekday?

This is my question any help into what to do in code?

Re: Descriptive Statistics

Goffy123 — Mon, 13 Aug 2018 19:57:22 GMT

I have categoric data does this mean it is a different way?

Re: Descriptive Statistics

ballardw — Mon, 13 Aug 2018 19:59:08 GMT

@Goffy123 wrote:
I have categoric data does this mean it is a different way?

What descriptive statistics do you want?

Re: Descriptive Statistics

Goffy123 — Mon, 13 Aug 2018 20:02:46 GMT

The average of variable score by variable weekday

Re: Descriptive Statistics

Reeza — Mon, 13 Aug 2018 20:04:31 GMT

Provide more details and I can answer it then. For example, you can calculate the mean of a categorical variable so not sure how that would work, given your other response.

EDIT - added last sentence.

@Goffy123 wrote:
I have categoric data does this mean it is a different way?

Re: Descriptive Statistics

Goffy123 — Mon, 13 Aug 2018 20:08:14 GMT

My dataset is named Lasvegas and from that dataset I am trying to find the average of score by Review_weekday. The Score variable is 1-5 and the Review_ weekday is Monday, Tuesday.... Sunday.

Re: Descriptive Statistics

Reeza — Mon, 13 Aug 2018 20:09:59 GMT

If your only categorical variable is the grouping variable, ie weekday, that's fine since you're not summarizing the categorical data.

Did you run the example above? Did it work?

You can align your variables the same way and it should work fine.

If you're having issues post the code you're using and detail any issues.

@Goffy123 wrote:
My dataset is named Lasvegas and from that dataset I am trying to find the average of score by Review_weekday. The Score variable is 1-5 and the Review_ weekday is Monday, Tuesday.... Sunday.

Re: Descriptive Statistics

Kurt_Bremser — Mon, 13 Aug 2018 20:22:22 GMT

proc sql;
create table want as
select weekday, avg(score)
from have
group by weekday;
quit;