Five-point Likert items: t test versus Mann-Whitney-Wilcoxon

Likert questionnaires are widely used in survey research, but it is unclear whether the item data should be investigated by means of parametric or nonparametric procedures. This study compared the Type I and II error rates of the t test versus the Mann-Whitney-Wilcoxon (MWW) for five-point Likert items. Fourteen population distributions were...

Sterkte en vervormingseigenschappen van pijpleidingen in diep water: Afstudeerontwerp voor de afdeling Civiele Techniek in de richting Grondslagen Civiele Techniek/Toegepaste Mechanica