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Matched-Pairs Sampling
A sampling technique in which subjects are paired based on certain characteristics, and each pair is treated differently to examine the effect of a variable, minimizing variability among subjects.
Wilcoxon Signed-Rank Test
A non-parametric statistical test used to compare two related samples, matched samples, or repeated measurements on a single sample.
Nonzero Differences
Refers to the differences between paired observations that are not equal to zero, often considered in statistical tests like the Wilcoxon Signed-Rank Test.
Paired Sample
Two related samples or sets of data collected from the same group of subjects, used in experiments to analyze differences under varying conditions.
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