| Student's t | |
| —n | |
| a statistic often used to test the hypothesis that a random sample of normally distributed observations has a given mean, μ; given by t = (̄x--μ) √n/s where ̄x is the mean of the sample, s is its standard deviation, and n is the size of the sample | |
| [after Student, the pen name of W. S. Gosset (1876--1937), English statistician and research scientist] | |
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| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |