Examlex
The Spearman rank-correlation test is a nonparametric test that uses the directions of differences observed in a matched-pairs sample to determine whether the relative frequency distributions of two statistical populations are identical to or different from one another.
Headache
A pain or discomfort in the head, scalp, or neck, often categorized by intensity and duration.
Aspirin
A medication used to reduce pain, fever, inflammation, and, in low doses, to prevent blood clots.
Negative Reinforcement
A stimulus that, when removed after a specific behavior, increases the likelihood of that behavior being repeated in the future.
Nagging
Persistently annoying or complaining in a repetitive and tiresome manner.
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