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 …
Mean absolute deviation vs. standard deviation - Cross Validated
Jan 13, 2014 · After calculating the "sum of absolute deviations" or the "square root of the sum of squared deviations", you average them to get the "mean deviation" and the "standard …
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 …
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 …
Difference between Mean/average accuracy and Overall accuracy
Sep 17, 2018 · They mentioned that they repeated each experiment 10 times and calculated both mean and standard deviation. after that they also mentioned they calculated overall accuracy. …
Calculating the parameters of a Beta distribution using the mean …
Nov 29, 2017 · How can I calculate the α α and β β parameters for a Beta distribution if I know the mean and variance that I want the distribution to have? Examples of an R command to do this …
Calculate standard deviation from sample size, mean, and …
Jan 2, 2018 · If you are assuming a normal distribution then the formula for the endpoints of the confidence interval is strictly a function of the sample standard deviation. The other variables …
mean - What are the relative merits of Winsorizing vs. Trimming …
Winsorizing data means to replace the extreme values of a data set with a certain percentile value from each end, while Trimming or Truncating involves removing those extreme values. I …
Why is median age a better statistic than mean age?
Oct 22, 2013 · People of such age have 1.5 to 4 times the influence on the mean than they do on the median compared to very young people. Thus, the median is a bit more up-to-date statistic …
How to calculate `mean` and `sd` of lognormal distribution based …
May 29, 2020 · Lognormal distribution as below: estimate meanlog 6.0515 sdlog 0.3703 How to calculate the mean and sd of this distribution?