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Most frequently, t statistics are used in Student's t-tests, a form of statistical hypothesis testing, and in the computation of certain confidence intervals. The key property of the t statistic is that it is a pivotal quantity – while defined in terms of the sample mean, its sampling distribution does not depend on the population parameters, and thus it can be used regardless of what these ...
Another is Hotelling's T 2 statistic follows a T 2 distribution. However, in practice the distribution is rarely used, since tabulated values for T 2 are hard to find. Usually, T 2 is converted instead to an F statistic. For a one-sample multivariate test, the hypothesis is that the mean vector (μ) is equal to a given vector (μ 0).
In probability theory and statistics, Student's t distribution (or simply the t distribution) is a continuous probability distribution that generalizes the standard normal distribution. Like the latter, it is symmetric around zero and bell-shaped.
gives a probability that a statistic is between 0 (mean) and Z. Example: Prob(0 ≤ Z ≤ 0.69) = 0.2549. Cumulative gives a probability that a statistic is less than Z. This equates to the area of the distribution below Z. Example: Prob(Z ≤ 0.69) = 0.7549. Complementary cumulative gives a probability that a statistic is greater than Z.
The completed Tholian web around the alternate universe ISS Enterprise (NX-01) from Star Trek: Enterprise. In a two-part episode of Star Trek: Enterprise called "In a Mirror, Darkly", it is revealed that the Defiant has reappeared in the Mirror Universe of Archer's time, where it is first salvaged by the Tholians and then stolen by the Terran ...
"The Icarus Factor" is the fourteenth episode of the second season of the American science fiction television series Star Trek: The Next Generation. It is the 40th episode overall, first broadcast on April 24, 1989.
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Writer Hannah Louise Shearer pitched the episode to associate producer D. C. Fontana, highlighting the families [note 1] living on board the Enterprise. [1] While the pilot episode "Encounter at Farpoint" first mentioned the children on the ship, "When the Bough Breaks" was the first time they had been used as a plot element. [3]