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...

Modeling 3D Sedimentary Architecture of Glacio-Fluvial Valley Fills: Report Concerning Scientific Communication of MSc Thesis Results. For the Benefit of the Stichting Molengraaff Fonds.

The depositional architecture of valley fill systems is controlled by interaction of boundary conditions: ice cap and drainage area changes influence initial topography and river water and sediment discharge and thus control the sediment supply, whereas sea-level fluctuation and isostatic rebound control the accommodation rate. Glacial and...

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