
英语的mean这个词有哪些用法? - 知乎
mean这个词有许多用法和含义,在不同的情境下有不同的解释和表达方式。 以下是一些常见的用法: 1. 表示某物或某人的意图、目的或动机。 例如: - What do you mean? 你是什么意思? …
Which "mean" to use and when? - Cross Validated
So we have arithmetic mean (AM), geometric mean (GM) and harmonic mean (HM). Their mathematical formulation is also well known along with their associated stereotypical …
如何正确使用 mean 这个单词?可否举例说明? - 知乎
Aug 7, 2012 · 词典里翻译成的“小气,吝啬”只是mean的一小部分意思。 Mean在口语中更多的是“毒舌,刻薄,过分,坏”的意思。 -Cady: You're the one who made me like this so you could …
Difference in Means vs. Mean Difference - Cross Validated
Apr 29, 2015 · This means we take the mean from population 1 (y¯1 y 1) and subtract from it the mean from population 2 (y¯2 y 2). So, our "difference of two means" is (y¯1 y 1 - y¯2 y 2). …
mean和median的平均值有意义吗? - 知乎
mean 表示是观测值的平均值,只考虑数据集中出现的所有数据. 符合 正太分布. median 表示数据集的数据范围的中间值. 符合 偏态分布 举个例子, 如果有两个公司, 某岗位的工资的median value …
standard deviation - Can I use 'mean ± SD' for non-negative data …
May 8, 2023 · "Can I use 'mean ± SD' for non-negative data when SD is higher than mean?" clearly you can (you already managed it in the question), the issue is more should you do so. …
mean - Difference between standard error and standard deviation
Nov 3, 2017 · I'm struggling to understand the difference between the standard error and the standard deviation. How are they different and why do you need to measure the standard ...
Estimating mean and SD given the median and IQR values
Jul 15, 2024 · 5 it is possible to estimate mean and SD given the median and IQR? I am involved in a meta-analysis where some trials show outcomes as mean and standard deviation but …
What is the significance of 1 SD? - Cross Validated
Nov 2, 2024 · What do you mean by "the derivative at 1 SD is +- 1"? Derivative of what? If you mean of a density plot, then what distribution? The normal? Different distributions will have …
probability - Why are mean 0 and standard deviation 1 …
The mean of 0 and standard deviation of 1 usually applies to the standard normal distribution, often called the bell curve. The most likely value is the mean and it falls off as you get farther …