One-Way Analysis of Variance with SPSS - Coursework Example

Using results from the Tukey HSD test, it is observed that there are several comparisons listed in the table. For instance, in the first row, we can see the comparison between group 1 and the other two groups. Following this table across, we see that the difference of means between group 1 and the other two groups is significant. However, the difference in means between group 2 and 3 is not significant (p-value = 0.999). The results are consistent with our findings based on the ANOVA test in which the p-value was significant as it is less than 0.05. The significance of the p-value (from the ANOVA test) is observed due to the significant difference of means between groups 1 and 2 and 1 and 3.

Using results based on main effects and post-hoc statistical test, in this case Tukey HSD test, we reject the null hypothesis and conclude that there is a significant difference between the three groups. In other words, there is a difference between the means of the three