Statistical hypothesis testing

A statistical hypothesis is a hypothesis that is testable on the basis of observing a process that is modeled via a set of random variables. A statistical hypothesis test is a method of statistical inference. Commonly, two statistical data sets are compared, or a data set obtained by sampling is compared against a synthetic data set from an idealized model. A hypothesis is proposed for the statistical relationship between the two data sets, and this is compared as an alternative to an idealized null hypothesis that proposes no relationship between two data sets. The comparison is deemed statistically significant if the relationship between the data sets would be an unlikely realization of the null hypothesis according to a threshold probability—the significance level. Hypothesis tests are used in determining what outcomes of a study would lead to a rejection of the null hypothesis for a pre-specified level of significance. The process of distinguishing between the null hypothesis and the alternative hypothesis is aided by identifying two conceptual types of errors (type 1 & type 2), and by specifying parametric limits on e.g. how much type 1 error will be permitted.

单词	Statistical technique
释义	Statistical technique 原声例句经济学人-科技 That let her apply a statistical technique called principal-component analysis to the data, to work out the dimensions of chimpanzee personality. 从而弗里曼在数据整理中获得一项称之为“优先分析部分”的统计技术，提高界定黑猩猩性格维度的工作效率。科技 Crash Course There’s a very large class of widely used statistical machine learning techniques, but there are also some approaches with no origins in statistics. 有一大类广泛使用的统计机器学习技术，但也有一些方法并非起源于统计学。 Postgraduation English In 1947, Richard Doll and A. Bradford Hill of the British Medical Research Council created a sophisticated statistical technique to document the association between rising rates of lung cancer and increasing numbers of smokers. 到了二战后，流行病学思想取得了不少重大突破。 1947 年，英国医学研究会的理查德 ﹒ 多尔和 A ﹒ 布德福德 ﹒ 希尔创立了一种复杂的统计方法，以记录肺癌上升率和烟民增加之间的关系。英语百科 Statistical hypothesis testing A statistical hypothesis is a hypothesis that is testable on the basis of observing a process that is modeled via a set of random variables. A statistical hypothesis test is a method of statistical inference. Commonly, two statistical data sets are compared, or a data set obtained by sampling is compared against a synthetic data set from an idealized model. A hypothesis is proposed for the statistical relationship between the two data sets, and this is compared as an alternative to an idealized null hypothesis that proposes no relationship between two data sets. The comparison is deemed statistically significant if the relationship between the data sets would be an unlikely realization of the null hypothesis according to a threshold probability—the significance level. Hypothesis tests are used in determining what outcomes of a study would lead to a rejection of the null hypothesis for a pre-specified level of significance. The process of distinguishing between the null hypothesis and the alternative hypothesis is aided by identifying two conceptual types of errors (type 1 & type 2), and by specifying parametric limits on e.g. how much type 1 error will be permitted.
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Statistical technique

Statistical hypothesis testing