Using SPSS GLM, analyze the data and give the syntax, conclusions and interpretation for the test.
HUDM 5123 Lab 1: Dependent group's ttest (RB2 design)
This lab asks you to analyze a simple matchedgroups design in two ways: using the dependent groups' test, and analyzing the similar data as a randomized blocks design with p=2 levels of the withinsubjects factor (using SPSS's GLM procedure).
In this study, researcher is studying the effect of participation in an afterschool program on problem behaviours (for ex smoking, risky sex) in teens. Because participants in the program are volunteers, before being randomly assigned to conditions, the group of participating teens differs in a number of ways from nonparticipants most importantly in a composite measure of "social/academic risk." The researcher decides to try to control for group differences by matching pairs of students, one participant with one nonparticipant, with similar risk scores. Fifteen matched pairs of students are created, so the total number of students followed is N=30. After three months of program, the scores of participants and nonparticipants are compared (the dependent variable is a composite measure of problem behaviours, Y, obtained by summing severity measures across a set of target behaviours).
DATA:
Pair

Partic

NonPartic

01

16

22

02

09

14

03

18

14

04

23

26

05

07

19

06

22

16

07

14

17

08

09

17

09

14

09

10

16

25

11

15

15

12

17

23

13

25

26

14

09

18

15

17

12

Using SPSS GLM, analyze the data as an RB2 design. Call the "withinsubjects" (actually, withinpairs) factor PROGRAM. Once more, print out your syntax and output and turn it in. Also, in one sentence report the results of test (the value of the test statistic and decision you reach concerning the null hypothesis), and in another interpret results.