METHODS OF DATA ANALYSIS
PARAMETRIC AND NON PARAMETRIC TESTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Two students compared two brands of chips, Frito Lays and Golden Flakes, to see which company gives you more for your money. Five bags of each brand were measured with a very accurate scale. Use the Mann Whitney test to see if there are any significant differences between the two brands in the amount of product they put in their bags. Frito Lays:35.3, 35.4, 35.8 35.9, 35.9. Golden Flake:35.3, 37.8, 38.8, 38.1, 42.5. The bags that contained 35.9 grams will receive a rank of:
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4
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4.5
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5
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5.5
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Explanation:
Detailed explanation-1: -In other words, nonparametric methods are “always valid, but not always efficient, ‘’ while parametric methods are “always efficient, but not always valid.” Therefore, parametric methods are recommended when they can in fact be used.
Detailed explanation-2: -Parametric statistical techniques are best used to analyse categorical data.
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