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单词 Skewed distribution
释义

Skewed distribution

原声例句
经济学人-综合

And a highly skewed distribution can lower growth, if it translates into less equality of opportunity for the next generation.

并且如果这种现象可以理解成下一代拥有的机会更加失衡的话,那么高度不平衡的分配也可能降低增长速度。

可汗学院:统计学(视频版)

So that's another reason why it's called a right skewed or positively skewed distribution.

所以这就是为什么它被称为右偏分布或正偏分布的另一个原因。

现代大学英语精读(第2版)第四册

We avoid talking about the skewed distribution of the planet's wealth and income, dreaming instead that we can grow our way out of the problem.

我们总是避免谈论全球财富和收入分配的不平均和不合理,而是梦想着我们能够通过经济增长解决这些问题。

可汗学院:统计学(视频版)

Sometimes this is called a negatively skewed distribution.

有时这被称为负偏态分布。

可汗学院:统计学(视频版)

That's why it's called a left skewed distribution.

这就是为什么它被称为左偏分布。

可汗学院:统计学(视频版)

But my guess is you're going to have a left skewed distribution.

但我的猜测是你将有一个左偏分布。

可汗学院:统计学(视频版)

And similarly, this right skewed distribution, or this right you distribution, sometimes is called positively skewed.

同样,这种右偏分布,或这种右偏分布,有时被称为正偏分布。

可汗学院:统计学(视频版)

So this would just be a purely right skewed distribution where you have a long tail to the right.

所以这只是一个纯粹的右偏分布,你在右边有一条长尾巴。

纯飞行

Flying an extra engine had the following effects on the aircraft: The aircraft was unbalanced, requiring pilots to compensate for the skewed weight distribution.

使用额外的发动机会对飞机产生以下影响: 飞机不平衡,需要飞行员补偿倾斜的重量分布。

可汗学院:统计学(视频版)

You don't have a multimodal distribution like this, in a left skewed distribution, your mean is going to be to the left of your median.

您没有这样的多峰分布,在左偏分布中,您的均值将位于中位数的左侧。

可汗学院:统计学(视频版)

So I would call this, when you have a tail that goes more to the right than to the left, a right skewed distribution.

所以我会称之为,当你有一条尾巴更多地向右而不是向左时, 右偏分布。

可汗学院:统计学(视频版)

It's hard to kind of have a good intuition for a discrete distribution because you really can't take on those values, but it makes sense that the distribution is skewed to the right over here.

很难对离散分布有很好的直觉,因为你真的不能接受这些值,但分布在这里向右倾斜是有道理的。

中文百科

偏度 Skewness

(重定向自Skewed distribution)
偏度不为零的实验数据样本(小麦胚芽鞘的向地反应:1,790)
负偏态(左)和正偏态(右)
En punteado negro: la media, en punteado gris: la moda.
Comparison of mean, median and mode of two log-normal distributions with different skewness.

在机率论和统计学中,偏度衡量实数随机变量概率分布的不对称性。偏度的值可以为正,可以为负或者甚至是无法定义。在数量上,偏度为负(负偏态)就意味着在概率密度函数左侧的尾部比右侧的长,绝大多数的值(包括中位数在内)位于平均值的右侧。偏度为正(正偏态)就意味着在概率密度函数右侧的尾部比左侧的长,绝大多数的值(但不一定包括中位数)位于平均值的左侧。偏度为零就表示数值相对均匀地分布在平均值的两侧,但不一定意味着其为对称分布。

英语百科

Skewness 偏度

(重定向自Skewed distribution)
Example distribution with non-zero (positive) skewness. These data are from experiments on wheat grass growth.
Comparison of mean, median and mode of two log-normal distributions with different skewness.
En punteado negro: la media, en punteado gris: la moda.

In probability theory and statistics, skewness is a measure of the asymmetry of the probability distribution of a real-valued random variable about its mean. The skewness value can be positive or negative, or even undefined.

The qualitative interpretation of the skew is complicated. For a unimodal distribution, negative skew indicates that the tail on the left side of the probability density function is longer or fatter than the right side – it does not distinguish these shapes. Conversely, positive skew indicates that the tail on the right side is longer or fatter than the left side. In cases where one tail is long but the other tail is fat, skewness does not obey a simple rule. For example, a zero value indicates that the tails on both sides of the mean balance out, which is the case for a symmetric distribution, but is also true for an asymmetric distribution where the asymmetries even out, such as one tail being long but thin, and the other being short but fat. Further, in multimodal distributions and discrete distributions, skewness is also difficult to interpret. Importantly, the skewness does not determine the relationship of mean and median.

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更新时间:2025/6/23 14:59:19