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In-Depth Information
Figure 7.16 Contrasts
win-
dow with drop-down menu.
which it is being compared. We saw this same information in the post hoc
Tukey analysis.
The fifth line of each major row is labeled as
Sig.
and presents the
probability of that mean difference occurring by chance given that the
Contrast Results (K Matrix)
This is the mean difference.
Depende...
satscore
months of study Simple Contrast
a
Level 2 vs. Level 1
Contrast Estimate
Hypothesized Value
Difference (Estimate - Hypothesized)
61.429
0
This is the probability of
the mean difference
between Group 0 and
Group 2 occurring by
chance alone. This
probability is less than
our alpha level and is
therefore statistically
significant.
61.429
Std. Error
Sig.
95% Confidence Interval
for Difference
19.462
Lower Bound
Upper Bound
.004
21.682
101.176
Level 3 vs. Level 1
Contrast Estimate
Hypothesized Value
Difference (Estimate - Hypothesized)
140.000
0
140.000
Std. Error
Sig.
95% Confidence Interval
for Difference
19.462
.000
Lower Bound
Upper Bound
100.253
179.747
Level 4 vs. Level 1
Contrast Estimate
Hypothesized Value
Difference (Estimate - Hypothesized)
201.429
0
201.429
Std. Error
Sig.
95% Confidence Interval
for Difference
19.462
.000
161.682
241.176
210.000
Lower Bound
Upper Bound
Level 5 vs. Level 1
Contrast Estimate
Hypothesized Value
Difference (Estimate - Hypothesized)
0
210.000
Std. Error
Sig.
95% Confidence Interval
for Difference
19.462
Lower Bound
Upper Bound
.000
170.253
249.747
a. Reference category
=
1
Figure 7.17.
Output of the contrast analysis.
