How do I calculate a weighted standard deviation? In Excel?
I want to find the standard deviation of the percentages, but weighted for their data volume. ie, the first and last data points should dominate the calculation.
Confused when to use Population vs Sample standard deviation in ...
Aug 30, 2020 · The population standard deviation is relevant where the numbers that you have in hand are the entire population, and the sample standard deviation is relevant where the …
How exactly are standardized residuals calculated - Cross Validated
Aug 11, 2015 · Which version of Excel and what implementation of regression (LINEST? The analysis toolpack? Something else)? Are these standardized or studentized residuals? Could …
Average of standard deviations - Cross Validated
Oct 16, 2021 · The standard deviation for set 1 is 3.74 (with a mean 8.7) and the one for set 2 is 4.72 (with a mean of 92). In both cases, the data points are "gathered" around their respective …
How to 'sum' a standard deviation? - Cross Validated
I have a monthly average for a value and a standard deviation corresponding to that average. I am now computing the annual average as the sum of monthly averages, how can I represent …
How to compute standard deviation of difference between two …
0 There are better ways to estimate the standard deviation of the difference of two independent emperical datasets, when the probability distributions are unknown. You can use convolution, …
Is it incorrect to calculate the mean and standard deviation of ...
Oct 30, 2015 · It was a blanket request to calculate the mean and standard deviation of a set of metrics to set thresholds for them. So in this example, the 98.4% average would be used to …
How to calculate standard deviation when only mean of the data …
Sep 6, 2023 · The following table shows distributions where it is indeed relatively easy to do so. Shown are the parameters, mean $\mu$ and variance as given in the different Wikipedia links, …
variance - Clarifying the default "standard error" for error bars in ...
Oct 29, 2024 · I have noticed that Excel allows you to toggle "error bars" for any given plot and one of the options is to have the error bars denote standard errors.
Can I exclude outliers when calculating mean or standard …
Jul 23, 2020 · Can I exclude the outliers when calculating the mean value or standard deviation, as they largely affect both parameters? I am quite green when it comes to statistics, so I would …