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Random Sample
A group of people selected from a broader population, where every person has the same probability of being chosen.
Sign Test
A nonparametric test used to determine if there is a median difference between two paired samples.
Matched Pairs
An experimental design technique where each treatment is given to two subjects that are as closely matched as possible, or to the same subject under different conditions.
P-value
The p-value is a statistical measure indicating the probability of observing test results at least as extreme as those observed, assuming the null hypothesis is true.
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