|
- 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 examples (e g , Harmonic mea
- When do we use S. E. M. and when do we use S. D. ?
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 without specifying a null hypothesis
- 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“ 观测值 的平均”，平均值是“ 统计量 的平均”。举个例子，例如一个人的身高的真实值是180，但利用不同的仪器
- 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 someone is using a different type of mean, such as the geometric mean or the harmonic mean, but I think it is implicit from your question that you were talking about the arithmetic mean
- How to read scientific notation output (numbers that include e)?
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 very small P values or values in the covariance matrix Something of the sort: -1 861246e-04 for example in a covariance matrix
- What is the significance of 1 SD? - Cross Validated
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 different derivatives at 1 SD from the mean
- Symmetric AND Weight MAPE Calculation - Cross Validated
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), which is useful, but has, a
- mean - Is it correct to use plus or minus symbol before standard . . .
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
|
|
|