two-sided alternative hypothesis

См. также в других словарях:

• two-tailed test — a hypothesis test (q.v.) in which the critical region comprises both tails of the distribution of the test statistic and the null hypothesis is tested against a two sided alternative that includes deviation from the null hypothesis in both… …   Medical dictionary

• Two-tailed test — The two tailed test is a statistical test used in inference, in which a given statistical hypothesis, H0 (the null hypothesis), will be rejected when the value of the test statistic is either sufficiently small or sufficiently large. This… …   Wikipedia

• Two-Tailed Test — A statistical test in which the critical area of a distribution is two sided and tests whether a sample is either greater than or less than a certain range of values. If the sample that is being tested falls into either of the critical areas, the …   Investment dictionary

• Null hypothesis — For the periodical, see Null Hypothesis: The Journal of Unlikely Science. The practice of science involves formulating and testing hypotheses, assertions that are capable of being proven false using a test of observed data. The null hypothesis… …   Wikipedia

• 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

• P-value — In statistical significance testing, the p value is the probability of obtaining a test statistic at least as extreme as the one that was actually observed, assuming that the null hypothesis is true. One often rejects the null hypothesis when the …   Wikipedia

• Test de Kolmogorov-Smirnov — En statistiques, le test de Kolmogorov Smirnov est un test d hypothèse utilisé pour déterminer si un échantillon suit bien une loi donnée connue par sa fonction de répartition continue, ou bien si deux échantillons suivent la même loi. Sommaire 1 …   Wikipédia en Français

• Test de kolmogorov-smirnov — En statistiques, le test de Kolmogorov Smirnov est un test d hypothèse utilisé pour déterminer si un échantillon suit bien une loi donnée connue par sa fonction de répartition continue, ou bien si deux échantillons suivent la même loi. Sommaire 1 …   Wikipédia en Français

• McNemar's test — In statistics, McNemar s test is a non parametric method used on nominal data. It is applied to 2 × 2 contingency tables with a dichotomous trait, with matched pairs of subjects, to determine whether the row and column marginal… …   Wikipedia

• Resampling (statistics) — In statistics, resampling is any of a variety of methods for doing one of the following: # Estimating the precision of sample statistics (medians, variances, percentiles) by using subsets of available data (jackknife) or drawing randomly with… …   Wikipedia

• Pearson's chi-squared test — (χ2) is the best known of several chi squared tests – statistical procedures whose results are evaluated by reference to the chi squared distribution. Its properties were first investigated by Karl Pearson in 1900.[1] In contexts where it is… …   Wikipedia