The appropriate next step according to materials covered in this course is to examine post hoc pairwise comparisons.
Pairwise Comparisons is known to be a kind or type of post-hoc analysis, where a person can compare the mean differences to that of a critical value.
Note that a post hoc tests tell a person, the key differences that exist between three or more set of means when an analysis of variance (ANOVA) F test is said to be significant just as in the case above.
See options below
Examine post hoc pairwise comparisons
Examine Levene’s test of equality of variance
Examine the results for each DV with 6 ANCOVAs
Examine the results for each DV with 6 ANOVAs
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