网站首页  英汉词典

请输入您要查询的英文单词:

 

单词 Null hypothesis
释义

Null hypothesis

原声例句
可汗学院:统计学(视频版)

So we will reject the null hypothesis.

所以我们将拒绝原假设。

可汗学院:统计学(视频版)

So we are going to reject the null hypothesis.

所以我们要拒绝原假设。

可汗学院:统计学(视频版)

We say look, we're going to assume that the null hypothesis is true.

我们说看,我们将假设原假设为真。

可汗学院:统计学(视频版)

And if this is more extreme than that, then we will reject our null hypothesis.

如果这个比那个更极端,那么我们将拒绝我们的原假设。

TED-Ed(视频版)

014, they'd rule out the null hypothesis that she can't distinguish the teas.

014,他们会排除她无法区分茶的零假设。

TED-Ed(视频版)

05 or below is considered statistically significant, meaning there's enough evidence to reject the null hypothesis.

05 或以下被认为具有统计显着性,这意味着有足够的证据可以拒绝原假设。

TED-Ed(视频版)

To analyze her choices, we define what's called a null hypothesis: that she can't distinguish the teas.

为了分析她的选择,我们定义了所谓的零假设:她无法区分茶。

可汗学院:统计学(视频版)

We say, well, there's less than a 1% chance of that happening given that the null hypothesis is true.

我们说,假设零假设为真,那么发生这种情况的可能性不到 1%。

简单英语小故事

Sometimes, you have a null hypothesis: you want to prove that there is not a relation between two things.

有时,您有一个零假设:您想证明两件事之间不存在关系。

可汗学院:统计学(视频版)

Our null hypothesis can be that we don't meet the standards.

我们的原假设可以是我们不符合标准。

可汗学院:统计学(视频版)

Because if the null hypothesis is true there's a 0.5% chance that this could still happen.

因为如果原假设为真,则仍有 0.5% 的可能性会发生这种情况。

可汗学院:统计学(视频版)

So let's just make a null hypothesis.

所以让我们做一个零假设。

可汗学院:统计学(视频版)

Our null hypothesis is that the herbs do nothing.

我们的零假设是草药什么都不做。

可汗学院:统计学(视频版)

Before we do that, let's just define what our null hypothesis and our alternative hypothesis are going to be.

在我们这样做之前,让我们先定义我们的原假设和备择假设是什么。

中级英语短文

“This study will examine every way this journey impacts my body, but my null hypothesis is that there will be improvements to my health due to the increased pressure.”

“这项研究将检查这次旅行对我身体的各种影响,但我的初始假设是,由于压力的增加,我的健康会有所改善。”

可汗学院:统计学(视频版)

We figure out, assuming the null hypothesis, the expected results you would've gotten in each of these cells.

假设零假设,我们计算出您在每个单元格中获得的预期结果。

可汗学院:统计学(视频版)

And if it is really low, then we will reject the null hypothesis.

如果它真的很低,那么我们将拒绝原假设。

可汗学院:统计学(视频版)

And because it's so unlikely to get a statistic like that assuming that the null hypothesis is true, we decide to reject the null hypothesis.

并且由于假设原假设为真,不太可能获得这样的统计数据,因此我们决定拒绝原假设。

TED-Ed(视频版)

That's partly because all a p-value actually tells us is the probability of getting a certain result, assuming the null hypothesis is true.

这部分是因为所有 p 值实际上告诉我们的是获得特定结果的概率,假设原假设为真。

可汗学院:统计学(视频版)

So it's actually not that crazy to get it if you assume the null hypothesis.

所以如果你假设原假设,得到它实际上并不疯狂。

中文百科

零假设

在推论统计学中,零假设虚无假设英语:null hypothesis)是做统计检验时的一类假设。零假设的内容一般是希望被证明为错误的假设或者是需要着重考虑的假设。比如说,在相关性检验中,一般会取“两者之间无关联”作为零假设,而在独立性检验中,一般会取“两者之间是独立”作为零假设。与零假设相对的是备择假设对立假设英语:alternative hypothesis),即希望证明是正确的另一种可能。从数学上来看,零假设和备择假设的地位是相等的,但是在统计学的实际运用中,常常需要强调一类假设为应当或期望实现的假设。如果一个统计检验的结果拒绝零假设(结论不支持零假设),而实际上真实的情况属于零假设,那幺称这个检验犯了第一类错误。反之,如果检验结果支持零假设,而实际上真实的情况属于备择假设,那幺称这个检验犯了第二类错误。通常的做法是,在保持第一类错误出现的机会在某个特定水平上的时候(即显着性差异值或α值),尽量减少第二类错误出现的概率。

英语百科

Null hypothesis 零假设

Ronald Fisher
Jerzy Neyman

In inferential statistics, the term "null hypothesis" usually refers to a general statement or default position that there is no relationship between two measured phenomena, or no difference among groups. Rejecting or disproving the null hypothesis—and thus concluding that there are grounds for believing that there is a relationship between two phenomena (e.g. that a potential treatment has a measurable effect)—is a central task in the modern practice of science, and gives a precise criterion for rejecting a hypothesis.

随便看

 

英汉网英语在线翻译词典收录了3779314条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2024 encnc.com All Rights Reserved
更新时间:2025/6/17 18:00:05