John conducted a taste test on a new brand of French fries. He gave each partici

Question

John conducted a taste test on a new brand of French fries. He gave each participant 5 of the new brand of fries and 5 of the old brand of fries and asked them to rate which brand they preferred. The participants rated both brands of fries as equally preferable. Based on this, he recommended to the manufacturer to move ahead with producing this new brand. However, the brand did not sell well. People reported feeling nauseous after they had consumed a whole portion.

There is a problem with validity. Which validity is weak in this example? internal validity, external validity, statistical validity or construct validity

Explanation / Answer

In this example, statistical validity is weak.

REASON:

Statistical validity is the extent to which the conclusions drawn from a statistical test are reliable. Here sample size n = 5 is not adequate.

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