sign test

sign test
a nonparametric statistical test based on a null hypothesis that by chance the experimental group should outperform the control group for half the outcome variables and vice versa. Results are scored as a series of pluses and minuses awarded to the experimental group depending on its performance relative to that of the control group, a binomial distribution of scores with p = 0.5 being expected under the null hypothesis.

Medical dictionary. 2011.

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  • Sign test — In statistics, the sign test can be used to test the hypothesis that there is no difference between the continuous distributions of two random variables X and Y . Formally:Let p = Pr( X > Y ), and then test the null hypothesis H0: p = 0.50. This… …   Wikipedia

  • Lasиgue sign test — La·sиgue sign, test (lah segґ) [Ernest Charles Lasиgue, French physician, 1816–1883] see under sign, and see straight leg–raising test, under test …   Medical dictionary

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  • Gaenslen sign (test) — Gaens·len sign (test) (genzґlən) [Frederick Julius Gaenslen, American surgeon, 1877–1937] see under sign …   Medical dictionary

  • Romberg disease (trophoneurosis) sign (test) spasm — Rom·berg disease (trophoneurosis), sign (test), spasm (romґbərg) [Moritz Heinrich Romberg, German physician, 1795–1873] see facial hemiatrophy, under hemiatrophy, and see under sign and spasm …   Medical dictionary

  • Becker phenomenon (sign) test — Beck·er phenomenon (sign), test (bekґər) [Otto Heinrich Enoch Becker, German oculist, 1828–1890] see under phenomenon and test …   Medical dictionary

  • Boas algesimeter point (sign test) — Bo·as algesimeter, point (sign, test) (boґahs) [Ismar Isidor Boas, German physician, 1858–1938] see under algesimeter and point …   Medical dictionary

  • Rumpel-Leede phenomenon (sign test) — Rum·pel Leede phenomenon (sign, test) (roomґpəl lēdґ) [Theodor Rumpel, German physician, 1862–1923; Carl Stockbridge Leede, American physician, 1882–1964] see under phenomenon …   Medical dictionary

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