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 …

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 …

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 …

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 …

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 …

Jul 4, 2018 · So do you mean a pseudorandrom number generator basically stores a periodic sequence of random number (uniformly distributed in [0, 1]) and a seed is merely an index to …

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 …

May 6, 2017 · Context is everything here. Are these theoretical variances (moments of distributions), or sample variances? If they are sample variances, what is the relation between …

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 …

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 …