Student's t-test
noun Date: 1935 t-test

New Collegiate Dictionary. 2001.

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• Student's t-test — A t test is any statistical hypothesis test in which the test statistic follows a Student s t distribution if the null hypothesis is supported. It is most commonly applied when the test statistic would follow a normal distribution if the value of …   Wikipedia

• Student's t-test — /tee test /, Statistics. a test for determining whether or not an observed sample mean differs significantly from a hypothetical normal population mean. [1945 50; see STUDENT S T DISTRIBUTION] * * * ▪ statistics       in statistics, a method of… …   Universalium

• Student's t-test — /tee test /, Statistics. a test for determining whether or not an observed sample mean differs significantly from a hypothetical normal population mean. [1945 50; see STUDENT S T DISTRIBUTION] …   Useful english dictionary

• Student's t test — noun any statistical hypothesis test in which the test statistic has a Students t distribution if the null hypothesis is true Syn: Students t, t test See Also: Students t distribution …   Wiktionary

• Student's t-test — noun a test for statistical significance based on a fraction (t) whose numerator is drawn from a normal distribution with a mean of zero, and whose denominator is the root mean square of a number of terms drawn from the same normal distribution.… …   English new terms dictionary

• Student's t test — see significance Pseudonym of W. S. Gosset (1876 1937), British statistician …   Medical dictionary

• Student's t test — see significance [Pseudonym of W. S. Gosset (1876–1937), British statistician] …   The new mediacal dictionary

• Student's t-distribution — Probability distribution name =Student s t type =density pdf cdf parameters = u > 0 degrees of freedom (real) support =x in ( infty; +infty)! pdf =frac{Gamma(frac{ u+1}{2})} {sqrt{ upi},Gamma(frac{ u}{2})} left(1+frac{x^2}{ u} ight)^{ (frac{… …   Wikipedia

• Student's t-Verteilung — Dichten von t verteilten Zufallsgrößen Die Studentsche t Verteilung (auch Student t Verteilung) ist eine Wahrscheinlichkeitsverteilung, die 1908 von William Sealey Gosset entwickelt wurde. Er hatte festgestellt, dass der standardisierte… …   Deutsch Wikipedia

• Student's t distribution — noun A distribution that arises when the population standard deviation is unknown and has to be estimated from the data. Syn: Students t, t distribution See Also: Students t test …   Wiktionary