Question: 4. A researcher has four different groups of participants, measured on a scale which is interval level. The scores are normally distributed and the groups

4. A researcher has four different groups of participants, measured on a scale which is interval level. The scores are normally distributed and the groups have similar variances. Which is the most appropriate test of difference?

a) Kruskal–Wallis test

b) Friedman’s ANOVA

c) One-way independent-groups ANOVA

d) Repeated-measures ANOVA

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