Which of the following statistical procedure is most appropriate when comparing the difference in means of more than three groups?
For a comparison of more than two group means the one-way analysis of variance (ANOVA) is the appropriate method instead of the t test. As the ANOVA is based on the same assumption with the t test, the interest of ANOVA is on the locations of the distributions represented by means too.
What is a good group dynamic?
A team with positive group dynamics tend to have team members who trust each other. They can work towards collective decisions and they are held accountable for outcomes. A team with good group dynamics may be constructive and productive, and it may demonstrate mutual understanding and self-corrective behaviour.
Which is multiple comparison method should I use?
As usual, the null hypothesis of no difference between means is rejected if and only if zero is not contained in the confidence interval. Which multiple comparison method should I use? The selection of the appropriate multiple comparison method depends on the inference that you want.
When to use nesting vs means in MINITAB?
You might decide to compare means for factor level combinations for which you believe the interactions are meaningful. Minitab restricts the terms that you can compare means for to fixed terms or interactions between fixed terms. Nesting is considered to be a form of interaction.
How are multiple comparisons used to assess statistical significance?
Multiple comparisons let you assess the statistical significance of differences between means using a set of confidence intervals, a set of hypothesis tests or both. As usual, the null hypothesis of no difference between means is rejected if and only if zero is not contained in the confidence interval.
When to compare means for factor level combinations?
You might decide to compare means for factor level combinations for which you believe the interactions are meaningful. Minitab restricts the terms that you can compare means for to fixed terms or interactions between fixed terms.