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Mean
The arithmetic average of a set of numbers, calculated by adding all the numbers in the set and dividing by the count of those numbers.
Caffeinated Beverages
Drinks that contain caffeine, a stimulant, which can temporarily ward off drowsiness and restore alertness.
Wilcoxon Signed Rank Test
A statistical test without assumption of underlying data distribution, designed to evaluate differences in the mean ranks of two paired samples, matched observations, or repeated measures within the same sample to determine variations in their population means.
Normal Approximation
A method used to approximate the distribution of a sum of independent random variables using the normal distribution, under certain conditions.
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