网站首页  英汉词典

请输入您要查询的英文单词:

 

单词 Sample standard deviation
释义

Sample standard deviation

原声例句
可汗学院:统计学(视频版)

S1, our sample standard deviation for group one is 4.67.

S1,我们第一组的样本标准差是 4.67。

可汗学院:统计学(视频版)

So my sample standard deviation is 0.50.

所以我的样本标准偏差是 0.50。

可汗学院:统计学(视频版)

And the standard deviation of these 10 data points right here is 2.98, the sample standard deviation.

这 10 个数据点的标准偏差为 2.98,即样本标准偏差。

可汗学院:统计学(视频版)

But we were able to estimate it with the sample standard deviation.

但是我们能够用样本标准差来估计它。

可汗学院:统计学(视频版)

The sample standard deviation of group two squared.

第二组的样本标准差平方。

可汗学院:统计学(视频版)

My sample standard deviation is just going to be the square root of my sample variance.

我的样本标准差只是样本方差的平方根。

可汗学院:统计学(视频版)

And if I want to figure out my sample standard deviation I just take the square root of that.

如果我想计算出我的样本标准偏差,我只需对其求平方根。

可汗学院:统计学(视频版)

If you take your sample standard deviation, 4.67 and you square it, you get your sample variance.

如果您取样本标准差 4.67 并将其平方,则得到样本方差。

可汗学院:统计学(视频版)

Plus my sample standard deviation for the control squared, which is the sample variance.

加上我的控制平方样本标准偏差,即样本方差。

可汗学院:统计学(视频版)

And then you can also calculate your sample standard deviation.

然后你还可以计算你的样本标准偏差。

可汗学院:统计学(视频版)

So our sample mean for group one is 9.31 pounds, with a sample standard deviation of 4.67.

因此,我们第一组的样本平均值为 9.31 磅,样本标准差为 4.67。

可汗学院:统计学(视频版)

So that is our sample standard deviation.

这就是我们的样本标准偏差。

可汗学院:统计学(视频版)

So we've been estimating the true standard deviation of the population with our sample standard deviation.

所以我们一直在用我们的样本标准差来估计总体的真实标准差。

可汗学院:统计学(视频版)

We can estimate the true standard deviation of the population with our sampling standard deviation, which was 0.5, 0.5 divided by 10.

我们可以用我们的抽样标准偏差来估计总体的真实标准偏差,即 0.5,即 0.5 除以 10。

可汗学院:统计学(视频版)

So if we don't know that the best thing we can put in there is our sample standard deviation.

因此,如果我们不知道我们可以放入的最好的东西就是我们的样本标准偏差。

可汗学院:统计学(视频版)

So if this can be estimated it's going to be estimated by the sample standard deviation.

所以如果这可以估计,它将通过样本标准差来估计。

可汗学院:统计学(视频版)

So we know our sample standard deviation is 1.04.

所以我们知道我们的样本标准差是 1.04。

可汗学院:统计学(视频版)

So this is going to be our sample standard deviation one squared, which is the sample variance for that distribution, over 100.

所以这将是我们的样本标准偏差的平方,这是该分布的样本方差, 超过 100。

可汗学院:统计学(视频版)

And so then the sample standard deviation is just going to be the square root of that.

因此,样本标准差就是它的平方根。

可汗学院:统计学(视频版)

And this t-table assumes that you are approximating that standard deviation using your sample standard deviation.

此 t 表假设您使用样本标准差来近似标准差。

中文百科

标准差 Standard deviation

(重定向自Sample standard deviation)
深蓝区域是距平均值小于一个标准差之内的数值范围,在常态分布中,此范围所占比率为全部数值之68%;两个标准差之内(深蓝,蓝)的比率合起来为95%;三个标准差之内(深蓝,蓝,浅蓝)的比率合起来为99.7%。

标准差英语:Standard Deviation,SD),数学符号 σ(sigma),在概率统计中最常使用作为测量一组数值的离散程度之用。标准差定义为方差的算术平方根,反映组内个体间的离散程度;标准差与期望值之比为标准离差率。测量到分布程度的结果,原则上具有两种性质:

一个总量的标准差或一个随机变量的标准差,及一个子集合样品数的标准差之间,有所差别。其公式如下所列。

标准差的观念是由卡尔·皮尔逊引入到统计中。

英语百科

Standard deviation 标准差

(重定向自Sample standard deviation)
A plot of a normal distribution (or bell-shaped curve) where each band has a width of 1 standard deviation – See also: 68–95–99.7 rule
Cumulative probability of a normal distribution with expected value 0 and standard deviation 1.
Geometric visualisation of the variance of the example distribution:A frequency distribution is constructed.The centroid of the distribution gives its mean.A square with sides equal to the difference of each value from the mean is formed for each value.Arranging the squares into a rectangle with one side equal to the number of values, n, results in the other side being the distribution's variance, σ².
Example of samples from two populations with the same mean but different standard deviations. Red population has mean 100 and SD 10; blue population has mean 100 and SD 50.

In statistics, the standard deviation (SD, also represented by the Greek letter sigma σ or s) is a measure that is used to quantify the amount of variation or dispersion of a set of data values. A low standard deviation indicates that the data points tend to be close to the mean (also called the expected value) of the set, while a high standard deviation indicates that the data points are spread out over a wider range of values.

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:2025/6/20 2:51:53