Ordinal Data: Nonparametric Statistical Analyses And Spss Applications Verified
Look for the "Asymp. Sig. (2-tailed)" value. If p < .05, the groups differ significantly. 2. Comparing Two Related Samples: Wilcoxon Signed-Rank Test
The output will provide the test statistic, degrees of freedom, and p-value. If the p-value is significant (e.g., < 0.05), we can conclude that there are significant differences in satisfaction ratings among the three products. Look for the "Asymp
This shows the spread of the middle 50% of your data. Effect Size: For Mann-Whitney or Wilcoxon, calculate to show the magnitude of the difference. Conclusion If p The output will provide the test
The "average" of a Likert scale (e.g., 3.4) may be theoretically meaningless. Effect Size: For Mann-Whitney or Wilcoxon, calculate to
SPSS does not provide a built-in post-hoc for Kruskal-Wallis in the Legacy Dialogs. To identify where the difference lies, researchers often run pairwise Mann-Whitney U tests as a follow-up, applying a Bonferroni correction (adjusting the alpha level by dividing .05 by the number of comparisons).