The Best Tasting Ice Creams Are Generally High in Fat

question 2

Multiple Choice

The best tasting ice creams are generally high in fat content, which gives them a creamy texture. Four brands of ice cream (two national and two local) were tested by consumers who rated how "creamy" they tasted on a 5-point Likert type scale (1 = not creamy to 5 = very creamy) . Each brand was rated by a different group of consumers. The appropriate nonparametric method to use for these data is the

• A) Kruskal-Wallis test.
• B) Kendall's tau test.
• C) Wilcoxon signed-rank test.
• D) Wilcoxon rank-sum test.
• E) Spearman's rho test.

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Definitions:

Stroboscopic Motion

The visual perception of movement created by a rapid succession of static images, as in a zoetrope or a movie.

Phi Phenomenon

The optical illusion of perceiving continuous motion between separate objects viewed in rapid succession.

Autokinetic Illusion

A visual phenomenon where a stationary point of light in a dark environment appears to move due to small involuntary eye movements.

Binocular Disparity

The difference in image location of an object seen by the left and right eyes, contributing to depth perception.