spss week 5
Mrspro
Week_5_tTests_SPSS_Output.pdf
Week 5 t Test Exercises SPSS Output
Independent t test
Group Statistics
Currently employed? N Mean Std. Deviation Std. Error Mean CES-D Score
dimension1
No 524 20.8965 12.46425 .54450
Yes 436 15.8239 10.13655 .48545
Independent Samples Test
Levene's Test
for Equality of
Variances t-test for Equality of Means
F Sig. t df
Sig. (2-
tailed)
Mean
Difference
Std. Error
Difference
95% Confidence
Interval of the
Difference
Lower Upper
CES-D
Score
Equal variances
assumed
23.615 .000 6.825 958 .000 5.07264 .74326 3.61404 6.53124
Equal variances not
assumed 6.954 957.514 .000 5.07264 .72949 3.64107 6.50421
Dependent t test
Paired Samples Statistics
Mean N Std. Deviation Std. Error Mean Pair 1 CES-D Score 18.5516 157 11.87462 .94770
CESD Score, Wave 1 17.8344 157 11.49908 .91773
Paired Samples Correlations
N Correlation Sig. Pair 1 CES-D Score & CESD
Score, Wave 1
157 .412 .000
Paired Samples Test
Paired Differences
t df
Sig. (2-
tailed) Mean
Std.
Deviation
Std. Error
Mean
95% Confidence Interval of
the Difference
Lower Upper
Pair 1 CES-D Score –
CESD Score, Wave 1
.71718 12.67921 1.01191 -1.28164 2.71599 .709 156 .480
Independent t test with 3 outcome variables
Group Statistics Educational attainment N Mean Std. Deviation Std. Error Mean CES-D Score No high school diploma 453 20.1408 11.49986 .54031
Diploma or GED 475 17.5931 11.72389 .53793
SF12: Physical Health
Component Score,
standardized
No high school diploma 421 44.03546 10.781420 .525454
Diploma or GED 440 46.27713 10.597265 .505205
SF12: Mental Health
Component Score,
standardized
No high school diploma 421 45.70217 10.693544 .521171
Diploma or GED 440 47.48328 10.895127 .519405
Independent Samples Test
Levene's Test
for Equality of
Variances t-test for Equality of Means
F Sig. t df
Sig. (2-
tailed)
Mean
Difference
Std. Error
Difference
95% Confidence
Interval of the
Difference
Lower Upper
CES-D Score Equal variances
assumed
.228 .633 3.340 926 .001 2.54776 .76278 1.05078 4.04474
Equal variances
not assumed 3.342 925.265 .001 2.54776 .76243 1.05146 4.04406
SF12: Physical
Health
Component
Score,
standardized
Equal variances
assumed
1.106 .293 -3.076 859 .002 -2.241671 .728649 -3.671812 -.811529
Equal variances
not assumed -3.075 855.772 .002 -2.241671 .728927 -3.672364 -.810977
SF12: Mental
Health
Component
Score,
standardized
Equal variances
assumed
.174 .677 -2.420 859 .016 -1.781113 .736103 -3.225884 -.336341
Equal variances
not assumed -2.421 858.441 .016 -1.781113 .735800 -3.225290 -.336936
