1. (6 pts.)The "Homework 11.sav" PSPP/SPSS data file, contains diagnostic, gender, and several MMPI scale scores for 184 individuals. Using this dataset, perform THREE independent samples t-tests with PSPP.

For the first analysis compare the Sc scores for schizophrenics and non-schizophrenics (diagnosis variable is SZ, and is coded 0 for non-schizophrenics and 1 for schizophrenics). Is the mean Sc score different for schizophrenics than non-schizophrenics? If so, is it higher, or lower?

For the second analysis compare the SzP scores for males and females (Sex is coded 1 for males and 2 for females). Is the mean SzP score different for males than for females? If so, is it higher, or lower?

For the third analysis compare the SzT scores for schizophrenics and non-schizophrenics (diagnosis as above). Is the mean SzT score different for schizophrenics than non-schizophrenics? If so, is it higher, or lower?

#Homework 11 Data-1.sav [DataSet1] - PSPPIRE Data Editor File Edit View Data Transform Analyze Graphs Utilities Windows Help X Variable Name Type Width Decimal Label Value Labels Missing Values Columns Align Measure Role 1 SZ Numeric 18 2 Broad Schil.00, Not Schiz}... None 9 Right Scale Input 2 sex Numeric 19 2 {1.00, Male}... None 8 Right Scale Input 3 Sc Numeric 18 2 Sc MMPI S None None 8 Right Scale Input 4 SZP Numeric 18 2 SZP MMPI None None 8 Right Scale Input 5 SZT Numeric 18 12 SZT MMPI None None 8 Right + IScale Input 6 8 9 10#Homework 11 Data-1.sav [DataSet1] - PSPPIRE Data Editor File Edit View Data Transform Analyze Graphs Utilities Windows Help X Variable Name Type Width Decimal Label Value Labels Missing Values Columns Align Measure Role 1 SZ Numeric 18 2 Broad Schil.00, Not Schiz}... None 9 Right Scale Input 2 sex Numeric 19 2 {1.00, Male}... None 8 Right Scale Input 3 Sc Numeric 18 2 Sc MMPI S None None 8 Right Scale Input 4 SZP Numeric 18 2 SZP MMPI None None 8 Right Scale Input 5 SZT Numeric 18 12 SZT MMPI None None 8 Right + IScale Input 6 8 9 10