Statistical Consulting 1-1

Statistical Consulting - Homework 1
Objective: listed in comments

The SAS code is as follows:

/* HW 1-1
Student listing ordered by index with vars id, age,
gender, gpa, and cscore.
Means of gpa and cscore also provided.

*/

DATA HW1DASH1;
INPUT ID AGE GENDER $ GPA CSCORE;
INDEX = GPA + 3 * CSCORE/500;
/* above answers part (c) for index situation */
/* below this line answers part (a) for data set */
DATALINES;
1 18 M 3.7 650
2 18 F 2.0 490
3 19 F 3.3 580
4 23 M 2.8 530
5 21 M 3.5 640
;

PROC SORT DATA=HW1DASH1;
BY INDEX;
RUN;

PROC PRINT DATA=HW1DASH1;
TITLE 'FIVE STUDENT SUBJECTS';
ID INDEX;
VAR ID AGE GENDER GPA CSCORE;
RUN;
/* answers part (b) for means */
PROC MEANS DATA=HW1DASH1 N MEAN STD STDERR MAXDEC=1;
TITLE 'DESCRIPTIVE STATISTICS';
VAR GPA CSCORE;
RUN;
/*
PROC FREQ DATA=HW1DASH1;
TABLES GENDER HWGRADE GRADE;
RUN;
*/

OUTPUT

INDEX ID AGE GENDER GPA CSCORE

4.94 2 18 F 2.0 490
5.98 4 23 M 2.8 530
6.78 3 19 F 3.3 580
7.34 5 21 M 3.5 640
7.60 1 18 M 3.7 650


The MEANS Procedure

Variable N Mean Std Dev Std Error
GPA 5 3.1 0.7 0.3
CSCORE 5 578.0 69.1 30.9