Selected SPSS Output for Oneway MANOVA
Selected SPSS Output for Oneway MANOVA
show sample MANOVA output based upon imaginary data for
the scenario described in Example 9.4. SPSS output for the MANOVA contains other tables
as well. However, these three tables provide the information needed to address the
omnibus hypothesis and the role of the dependent variables in determining whether
canonical variate means differ significantly.
Category means and standard deviations for the canonical variate appear in Table 9.12, entitled Descriptive
Statistics. Values in the Multivariate Tests table (Table 9.13) indicate whether these means differ
significantly. In this table, the row labeled "Wilks' Lambda" contains the values pertaining to the MANOVA
procedure described in Chapter 9. To further understand the p value included in this table, the researcher
might find values in Table 9.14, Test of Between-Subjects Effects, useful. This table provides p values for
oneway ANOVAs comparing category means for each of the dependent variables that compose the canonical
variate.
Values in lower portion of the Multivariate Tests table, labeled "genre," indicate whether
canonical variate means differ significantly for those who experienced the story by reading
it, watching it as a film, and watching it as a Broadway musical. In this table, SPSS presents
the results from four possible techniques of obtaining F for the MANOVA. For an analysis
using Section 9.3.2's method involving Λ, values in the Wilks' Lambda row of the table
should be examined. The F of 6.743 and the p of .000) indicate a significant difference
between the mean canonical variate values for each genre.
The presence of a significant difference in canonical variate means, however, does not
imply significant differences in the means for each dependent variable. The results of
ANOVAs that compare the mean setting, characters, and plot scores for each category
appear in Table 9.14. According to the values in the "genre" row of this table and based
upon the standard α of .05, subjects in the three independent-variable categories do not
have significantly different recall of characters (F=1.715, p=.182). They do, however, have
significantly different recall of the story's setting (F=14.932, p=.000) and plot (F=7.355,
p=.001). The differences in these dependent variable scores, provide a mathematical
explanation for the differences in canonical variate scores.
the scenario described in Example 9.4. SPSS output for the MANOVA contains other tables
as well. However, these three tables provide the information needed to address the
omnibus hypothesis and the role of the dependent variables in determining whether
canonical variate means differ significantly.
Category means and standard deviations for the canonical variate appear in Table 9.12, entitled Descriptive
Statistics. Values in the Multivariate Tests table (Table 9.13) indicate whether these means differ
significantly. In this table, the row labeled "Wilks' Lambda" contains the values pertaining to the MANOVA
procedure described in Chapter 9. To further understand the p value included in this table, the researcher
might find values in Table 9.14, Test of Between-Subjects Effects, useful. This table provides p values for
oneway ANOVAs comparing category means for each of the dependent variables that compose the canonical
variate.
Values in lower portion of the Multivariate Tests table, labeled "genre," indicate whether
canonical variate means differ significantly for those who experienced the story by reading
it, watching it as a film, and watching it as a Broadway musical. In this table, SPSS presents
the results from four possible techniques of obtaining F for the MANOVA. For an analysis
using Section 9.3.2's method involving Λ, values in the Wilks' Lambda row of the table
should be examined. The F of 6.743 and the p of .000) indicate a significant difference
between the mean canonical variate values for each genre.
The presence of a significant difference in canonical variate means, however, does not
imply significant differences in the means for each dependent variable. The results of
ANOVAs that compare the mean setting, characters, and plot scores for each category
appear in Table 9.14. According to the values in the "genre" row of this table and based
upon the standard α of .05, subjects in the three independent-variable categories do not
have significantly different recall of characters (F=1.715, p=.182). They do, however, have
significantly different recall of the story's setting (F=14.932, p=.000) and plot (F=7.355,
p=.001). The differences in these dependent variable scores, provide a mathematical
explanation for the differences in canonical variate scores.
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