查询词典 null

In an investigation of the relationship between variables X and Y, which of the following would most likely be the null hypothesis?

在一个变量之间关系的调查，X和Y，下列哪一项最有可能空假说？

It used to be that the goal in econometric work was to get results that were statistically significant, to reject the null hypothesis.

以前，计量经济学的目标，是找到一个具有统计显著性的结论，排除掉"零假设"。

Type I Error -- When the null hypothesis is rejected but it is actually true.

第一类错误--原假设为真而拒绝了原假设。

Which of the following statements is a correct Null Hypothesis for

下列哪一叙述是Hans 和Henri实验中的虚无假设？

We would like to reject h0 recall that in statistical hypothesis testing rejection of null hypothesis is always a strong conclusion

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)。

If this increase is large enough relative to the SSR in the model with all of the variables, then we can reject the null hypothesis.

如果相对于包括所有解释变量的模型，新的SSR的上升足够大的话，那么我们就能拒绝原假设。

Type 2 Error -- When the null hypothesis is not rejected but should have been.

第二类错误--原假设为伪而没有拒绝原假设。。

The probability of rejecting the null hypothesis where it is false.

那些经常食用苹果，番茄和香蕉的人患哮喘的机率很小。

Type II error - Failure to reject a null hypothesis that is in fact false.

二类错误-没有拒绝事实上错误的一个假设。

In the first case the prediction of earthquakes is a null hypothesis; in the second case the prediction of some earthquakes might be possible.

在头一种情况下，地震的预测是一个无意义的假定；在后一种情况下对某些地震进行预测可能是可能的。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。