英语释义

1. a statistical hypothesis to be tested and accepted or rejected in favor of an alternative specifically the hypothesis that an observed difference (as between the means of two samples) is due to chance alone and not due to a systematic cause

片语

null case hypothesis零格假设

null sub-hypothesis虚无分假说

NH Null Hypothesis虚无假设

functional null hypothesis功能性解消假说

equivalent null hypothesis[统计]

stating the null hypothesis明虚无假设

null expletive hypothesis空虚指代成分假说

descriptive null hypothesis描述性能消假说

the global null hypothesis全球零假设

英汉例句

• most statisticians would not argue if you decided to reject the null hypothesis that the results can be accounted for in terms of random sampling variability from the null distribution.

  如果您决定排除虚假设—结果可以按照零分布的随机抽样可变性获得，那么大多数统计师都不会有争议。

• setting an acceptance criterion based on the lack of statistical significance of the test of the null hypothesis that the slope is 1.0 is not an acceptable approach.

  基于缺少统计学意义的检测，假定斜率等于1。0，来设定可接受标準是不被接受的。

• if that probability is low, then you can reject the null hypothesis that the mean is the best predictor and, correspondingly, gain confidence that a simple linear model offers a good fit for the data.

  如果概率很低，那就可以不采用平均值是最佳预测值这一无效假设，并且相应地可以确信简单线性模型是与数据良好吻合的。

• in the case of this beer poll, the expected frequency under the null hypothesis is the following

  在这个啤酒欢迎度民意测验的示例中，在虚假设条件下的期望频率如下

• this paper analyzes the problem appearing in the parameter significance testing based on different choice of null hypothesis and discusses the choice principles of null hypothesis.

  分析了参数的显着性检验中由于零假设的不同选择所出现的问题，探讨了零假设的选择原则。

• next, i'll demonstrate how to model what would be expected under the null hypothesis so that i can compare the observed results to what would be expected under the null hypothesis.

  接下来，我将演示如何对在虚假设下所期望的事物建模，这样我就可以将观察结果与在虚假设条件下所期望的结果加以比较。

• the z-test tool can also be used for the case where the null hypothesis is that there is a specific nonzero value for the difference between the two population means.

  检验工具还可用于当两个总体平均值之间的差异具有特定非零值的空值假设的情况。

• we cannot reject the null hypothesis that the preferences of nova scotia beer drinkers have changed since your last poll.

  我们不能排除这样的虚假设，即自从上一次民意测验以来，新斯科舍省啤酒消费者偏好已经发生了变化。

• this study tested the null hypothesis that computed tomography (ct) and magnetic resonance imaging (mri) have the same diagnostic performance characteristics for the diagnosis of scaphoid fractures.

  本研究测试零假设，即在诊断舟状骨骨折方面，ct和mri具有相同的诊断性能特征。

• this means that the probability of observing a chi square value as extreme as 9.80 under the null hypothesis is 2 percent (which is quite a low probability).

  这意味着，在虚假设条件下，观察到 x平方分布极限值9.80的概率是 2％（这是一个相当低的概率）。

• these data had been analysed with statistics, and test of null hypothesis indicated that abies sp. are less important diets than the two above.

  对解消假设检验显示，冷杉叶是滇金丝猴的很次要食物。

• this means that the threshold for retaining the null hypothesis explanation was exceeded.

  这意味着超出了保持虚假设说明的阈值。

• we would like to reject h0 （recall that in statistical hypothesis testing rejection of null hypothesis is always a strong conclusion），thereby demonstrating that the process is capable.

  我们想要否定h0（取消对统计的假设中无效力假设的测试否定一直是一个强大的结论）。因此，示范加工是有能力的。

• setting an acceptance criterion based on the lack of statistical significance of the test of the null hypothesis that the slop is 1.0 is not an acceptable approach.

  通过测试证明该斜率为1.0的零假设没有统计学意义，这样的方法不能用于设定接受标準。

• the null hypothesis to be white noise has been rejected.

  经检验，时序为白噪声的零假设被拒绝。