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 …
When do we use S.E.M. and when do we use S.D.?
Feb 24, 2018 · I disagree with Wiki's use of the term "population mean". I believe they mean "null hypothesized mean". That's not even a necessary concept, since a CI can be constructed …
均值 (mean)和平均值 (average)的区别？ - 知乎
均值 (mean)是对恒定的真实值进行测量后，把测量偏离于真实值的所有值进行平均所得的结果； 平均值 (average)直接对一系列具有内部差异的数值进行的测量值进行的平均结果。均值是“ 观 …
How to read scientific notation output (numbers that include "e")?
Dec 20, 2017 · What does the notation like 8.6e-28 mean? What is the 'e' for? (2 answers) Closed 7 years ago. After running the lm regression model using R, sometime one is bound to get …
What is the difference between "mean value" and "average"?
The mean you described (the arithmetic mean) is what people typically mean when they say mean and, yes, that is the same as average. The only ambiguity that can occur is when …
mean - Is Median Absolute Percentage Error useless? - Cross …
Nov 20, 2022 · I'm working on a project focused on pricing houses. Looking online I see a lot of works and companies providing the performances of their model using the median instead of …
Symmetric AND Weight MAPE Calculation - Cross Validated
Jan 23, 2024 · I'm responsible to forecast a portfolio of consumer products on a monthly basis, and in calculating forecast accuracy, I'm lead to the MAPE (Mean Average Percent Error), …
Confidence intervals vs. standard deviation - Cross Validated
May 9, 2015 · There are two things here : The "2 sigma rule" where sigma refers to standard deviation is a way to construct tolerance intervals for normally distributed data, not confidence …
mean - Is it correct to use plus or minus symbol before standard ...
Apr 21, 2015 · I have represented standard deviation as "±SD" before in publications. But I like to have opinions on this. Is it appropriate to use the notation '±' with SD ? Or ...
用imagej 免疫组化及荧光强度的分析？ - 知乎
用Image J定量分析免疫组化图以及荧光强度方法有很多种，分享比较简单的步骤。 Image J软件安装 顶级图像分析工具，ImageJ、Fiji、Image pro plus，一次帮你搞定全部！ 1、用Image J测 …