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Standardized Test Statistic
A calculated value from sample data that has been transformed to conform to a standard scale, used in hypothesis testing to determine how far a sample statistic differs from what is expected under the null hypothesis.
Matched Pairs
An experimental design where pairs of subjects are matched based on certain criteria to compare effects of different treatments.
Population of Differences
Refers to the set of differences obtained by subtracting one set of values from another, often used in paired samples analysis.
Paired-Difference T-Test
A statistical method used to compare two related or paired groups by analyzing the differences within each pair.
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