Read Appendix 15B of the handout. Obtain Tables 15B.1 and 15B.2 by SPSS as follows.
[1] Start SPSS for Windows, and open AVERY.SAV file.
(Select FILE, then OPEN, choose the appropriate directory, double-click AVERY.SAV.)
[2] Create two variables,
CATCON = v5 + v6 + v7 + v8 +v9, and
RETCON = v10 + v11 + v12 + v13 + v14.
(Select TRANSFORM, then COMPUTE. Name the target variable as CATCON. The Numeric Expression is " v5 + v6 + v7 + v8 + v9 ". Then click OK. Repeat the process for RETCON. Two new columns named CATCON and RETCON should appear after V44.)
[3] Conduct a hypothesis test on a null hypothesis that the population means of CATCON for male and female are equal with a t-test for independent samples.
(Select STATISTICS, then COMPARE MEANS, then INDEPENDENT-SAMPLES T TEST. Choose CATCON for a test variable, and v44 for a grouping variable. Click DEFINE GROUPS..., and enter 1 and 2 for Group 1 and Group2, respectively. Now, click CONTINUE and then OK.)
[4] Conduct a hypothesis test on a null hypothesis that the population means of CATCON and RETCON are equal with a t-test for paired samples.
(Select STATISTICS, then COMPARE MEANS, then PAIRED-SAMPLES T TEST. Choose CATCON and RETCON for paired variables, and click OK.)
[5] Edit the two outputs and obtain the print out (If there is alignment and wrap-around problems, use small COURIER fonts). Add an interpretation for each test in one sentence.