Question

This is an Economics Question

When using the SAS software for Economic calculations, write the code for calculation of mean median mode and 40th percentile for a data file named ISRO

Answer 1

Okay so in SAS, the codes are extremely user friendly. If you want mean ( average) you just mention mean

If you want median (the middle most observation in a set of observations) you write median and likewise.

However saying all these is just not enough. So, let's plunge into framing the solution formally.

We shall be using the PROC MEANS statistical method for answering this.

Let's also assume that the dataset ISRO is located in an user defined library called mylib (which contains all SAS related datasets you possess)

PROC MEANS DATA = MYLIB.ISRO MEAN MEDIAN MODE P40 ;
RUN;

Now this code may not work in all cases & if such is the scenario, we can have a more powerful alternative : PROC UNIVARIATE. This is a more powerful & descriptive procedure & provides you with almost all basic statistical measures at one go.

The code goes like this

PROC UNIVARIATE DATA = MYLIB.ISRO;
RUN;

Note one thing here, if you're only interested in a particular numerical variable present in the ISRO dataset, just add the following line before the run statement.

VAR ____;

In the blank, mention your variable name. Otherwise what will happen is you'll get details of ALL the numerical variables which you might be having in the ISRO dataset.

If there're multiple variables then just do this:

VAR Var1 var2 var3 ...... ;

Var1 = name of your first numerical variable

Var 2 = name of the second numerical variable & so on.