Information Technology Reference
In-Depth Information
Descriptive Statistics
Mean
Std. Deviation
N
whitepow yesgran aqbox
whitepow yesgran orbox
whitepow nogran aqbox
whitepow nogran orbox
whitepow yesgran aqbox
whitepow yesgran orbox
whitepow nogran aqbox
whitepow nogran orbox
whitepow yesgran aqbox
whitepow yesgran orbox
whitepow nogran aqbox
whitepow nogran orbox
6.5000
.77201
6
4.0000
.67231
6
2.7000
.85088
6
3.2000
.84853
6
2.1000
.53666
6
2.0000
.40497
6
2.2000
.49396
6
2.3333
.71740
6
4.5000
.94021
6
5.0000
.73756
6
3.5667
.77374
6
6.7000
.56569
6
Figure 12.12
Descriptive statistics output.
conditions (i.e., at least 2
df
) were evaluated for sphericity; none was
statistically significant.
The summary table for the within-subjects variance is displayed in
Figure 12.14. With a nonsignificant sphericity test, we can focus on the
rows labeled
Sphericity Assumed
.
Mauchly's test was not
significant for the main and
interaction effects. We
therefore can assume that
we have met the sphericity
assumption.
Mauchly's Test of Sphericity
b
Measure: MEASURE_1
Epsilon
a
Approx.
Chi-Square
Greenhous
e-Geisser
Within Subjects Effect
powcolor
granules
boxcolor
powcolor * granules
powcolor * boxcolor
granules * boxcolor
powcolor * granules*
boxcolor
Mauchly's W
Huynh-Feldt
Sig.
Lower-bound
df
.253
5.499
2
.064
.572
.631
.500
1.000
.000
0
.
1.000
1.000
1.000
1.000
.000
0
.
1.000
1.000
1.000
.733
1.245
2
.537
.789
1.000
.500
.485
2.893
2
.235
.660
.805
.500
1.000
.000
0
.
1.000
1.000
1.000
.494
2.818
2
.244
.664
.813
.500
Tests the null hypothesis that the error covariance matrix of the orthonormalized transformed dependent variables is
proportional to an identity matrix.
May be used to adjust the degrees of freedom for the averaged tests of significance. Corrected tests are displayed in
the Tests of Within-Subjects Effects table.
a.
b.
Design: Intercept
Within Subjects Design:
powcolor+granules+boxcolor+powcolor*granules+powcolor*boxcolor+granules*boxcolor+powcolor*granules*boxcolor
Figure 12.13
Outcome of the Mauchly's sphericity tests.
