
117Analyses for Two Independent Samples
The box plots and statistical information displayed in Figure4.24 reveal
that the test-only group (“experimental group” in the gure) had more
extreme scores than the participation-only (control) group. Note that the
span of the participation group is 10.0, which can be assessed easily from
Table4.7, and the one-sided p-value is 0.012. Usually, one would interpret the
e range of score is the same
across categories of group.
Asymptotic significances are displayed. e significance level is 0.05.
a
Exact significance is displayed for this test.
Hypothesis Test Summary
Null Hypothesis
1
Test Sig.Decision
0.043
a
Inde ...