What follows is the SPSS output from the item analysis of questionnaire 3903. The response-frequency analysis of each item is followed by the distribution of total summed scores; after that the traditional item analysis statistics are presented.
01-Apr-96 SPSS Release 4.0 for Macintosh
S3903Q1
Valid Cum
Value Label Value Frequency Percent Percent Percent
0 7 30.4 30.4 30.4
1 8 34.8 34.8 65.2
2 8 34.8 34.8 100.0
------- ------- -------
Total 23 100.0 100.0
Mean 1.043 Std err .172 Median 1.000
Mode 1.000 Std dev .825 Variance .680
Kurtosis -1.519 S E Kurt .935 Skewness -.085
S E Skew .481 Range 2.000 Minimum .000
Maximum 2.000 Sum 24.000
Valid cases 23 Missing cases 0
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
S3903Q2
Valid Cum
Value Label Value Frequency Percent Percent Percent
0 2 8.7 8.7 8.7
1 9 39.1 39.1 47.8
2 12 52.2 52.2 100.0
------- ------- -------
Total 23 100.0 100.0
Mean 1.435 Std err .138 Median 2.000
Mode 2.000 Std dev .662 Variance .439
Kurtosis -.347 S E Kurt .935 Skewness -.767
S E Skew .481 Range 2.000 Minimum .000
Maximum 2.000 Sum 33.000
Valid cases 23 Missing cases 0
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
S3903Q3
Valid Cum
Value Label Value Frequency Percent Percent Percent
0 1 4.3 4.3 4.3
1 11 47.8 47.8 52.2
2 11 47.8 47.8 100.0
------- ------- -------
Total 23 100.0 100.0
Mean 1.435 Std err .123 Median 1.000
Mode 1.000 Std dev .590 Variance .348
Kurtosis -.616 S E Kurt .935 Skewness -.454
S E Skew .481 Range 2.000 Minimum .000
Maximum 2.000 Sum 33.000
Valid cases 23 Missing cases 0
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
S3903Q4
Valid Cum
Value Label Value Frequency Percent Percent Percent
0 1 4.3 4.3 4.3
1 7 30.4 30.4 34.8
2 11 47.8 47.8 82.6
3 4 17.4 17.4 100.0
------- ------- -------
Total 23 100.0 100.0
Mean 1.783 Std err .166 Median 2.000
Mode 2.000 Std dev .795 Variance .632
Kurtosis -.241 S E Kurt .935 Skewness -.167
S E Skew .481 Range 3.000 Minimum .000
Maximum 3.000 Sum 41.000
Valid cases 23 Missing cases 0
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
S3903Q5
Valid Cum
Value Label Value Frequency Percent Percent Percent
0 11 47.8 47.8 47.8
1 8 34.8 34.8 82.6
2 3 13.0 13.0 95.7
3 1 4.3 4.3 100.0
------- ------- -------
Total 23 100.0 100.0
Mean .739 Std err .180 Median 1.000
Mode .000 Std dev .864 Variance .747
Kurtosis .507 S E Kurt .935 Skewness 1.023
S E Skew .481 Range 3.000 Minimum .000
Maximum 3.000 Sum 17.000
Valid cases 23 Missing cases 0
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
S3903Q6
Valid Cum
Value Label Value Frequency Percent Percent Percent
0 11 47.8 47.8 47.8
1 12 52.2 52.2 100.0
------- ------- -------
Total 23 100.0 100.0
Mean .522 Std err .106 Median 1.000
Mode 1.000 Std dev .511 Variance .261
Kurtosis -2.190 S E Kurt .935 Skewness -.093
S E Skew .481 Range 1.000 Minimum .000
Maximum 1.000 Sum 12.000
Valid cases 23 Missing cases 0
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
SC3903
Valid Cum
Value Label Value Frequency Percent Percent Percent
2.00 1 4.3 4.3 4.3
3.00 1 4.3 4.3 8.7
4.00 2 8.7 8.7 17.4
5.00 4 17.4 17.4 34.8
6.00 3 13.0 13.0 47.8
7.00 2 8.7 8.7 56.5
8.00 1 4.3 4.3 60.9
9.00 5 21.7 21.7 82.6
10.00 3 13.0 13.0 95.7
12.00 1 4.3 4.3 100.0
------- ------- -------
Total 23 100.0 100.0
Mean 6.957 Std err .546 Median 7.000
Mode 9.000 Std dev 2.619 Variance 6.862
Kurtosis -.849 S E Kurt .935 Skewness -.031
S E Skew .481 Range 10.000 Minimum 2.000
Maximum 12.000 Sum 160.000
Valid cases 23 Missing cases 0
-> RELIABILITY VARIABLES=S3903q1 TO S3903q6/
-> STATISTICS = DESCRIPTIVES CORRELATIONS/
-> SUMMARY = CORRELATIONS TOTAL.
R E L I A B I L I T Y A N A L Y S I S - S C A L E (A L L)
1. S3903Q1
2. S3903Q2
3. S3903Q3
4. S3903Q4
5. S3903Q5
6. S3903Q6
MEAN STD DEV CASES
1. S3903Q1 1.0435 .8245 23.0
2. S3903Q2 1.4348 .6624 23.0
3. S3903Q3 1.4348 .5898 23.0
4. S3903Q4 1.7826 .7952 23.0
5. S3903Q5 .7391 .8643 23.0
6. S3903Q6 .5217 .5108 23.0
CORRELATION MATRIX
S3903Q1 S3903Q2 S3903Q3 S3903Q4 S3903Q5
S3903Q1 1.0000
S3903Q2 .3800 1.0000
S3903Q3 -.0406 .1922 1.0000
S3903Q4 .3617 .3602 .1138 1.0000
S3903Q5 .1442 .3659 .3218 .6412 1.0000
S3903Q6 .1596 -.0292 .2690 -.0438 .2194
S3903Q6
S3903Q6 1.0000
# OF CASES = 23.0
INTER-ITEM
CORRELATIONS MEAN MINIMUM MAXIMUM RANGE MAX/MIN VARIANCE
.2277 -.0438 .6412 .6850 -14.6421 .0343
R E L I A B I L I T Y A N A L Y S I S - S C A L E (A L L)
ITEM-TOTAL STATISTICS
SCALE SCALE CORRECTED
MEAN VARIANCE ITEM- SQUARED ALPHA
IF ITEM IF ITEM TOTAL MULTIPLE IF ITEM
DELETED DELETED CORRELATION CORRELATION DELETED
S3903Q1 5.9130 4.9921 .3229 .3104 .6423
S3903Q2 5.5217 5.0791 .4501 .2906 .5934
S3903Q3 5.5217 5.8063 .2489 .1851 .6561
S3903Q4 5.1739 4.4229 .5400 .5372 .5507
S3903Q5 6.2174 4.0870 .5802 .5490 .5283
S3903Q6 6.4348 6.1660 .1714 .2298 .6731
RELIABILITY COEFFICIENTS 6 ITEMS
ALPHA = .6567 STANDARDIZED ITEM ALPHA = .6388