New answers tagged mean
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How to estimate mean and standard deviation of individual result given a sample of batch results?
In a professional lab environment, you'll be better off with the stat math other folks have presented, b/c other folks in a clinical/lab environment think in terms of stats and know what stat terms ...
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How to estimate mean and standard deviation of individual result given a sample of batch results?
The time until something happens usually follows some right-skewed distribution, so just mean and standard deviation might not be the most informative measures to describe the underlying probability ...
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How to estimate mean and standard deviation of individual result given a sample of batch results?
Let's consider an example in R: the true time per token is $\mu=1{,}000$ and its standard deviation is $\sigma=150$ (in otherwise unspecified units). I'll generate three million in total because ...
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Accepted
Meaning of subscript $n$ in sample mean variable
The reason why Wasserman bothers to include the $n$ subscript on $\bar X_n$ is (almost surely! 🥁) because he uses it in other sections. For instance, see Sections 5.3 and 5.4 where the statements of ...
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Meaning of subscript $n$ in sample mean variable
As suggested by Stephan Kolassa and Henry in the comments to the question, the subscript $n$ does seem to refer to the number of samples being used to calculate the mean.
In Section 3.3 "Variance ...
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Deviation between Mean and Median
The ratio (mean $-$ median) / SD has often been used as a measure of skewness. It has the perhaps surprising feature that it is bounded by $-1$ and $1$. But I would never recommend using it by itself -...
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Difference in Means vs. Mean Difference
d bar is for paired data that is correlated, and will have a different test statistic compared to what is used for a two sample t-test of independent sample means. in my opinion saying that mean ...
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Calculated spread and mean using mean results only
"However, because we are not interested in the behaviour of individual measurements, and instead we wish to analyse the distribution of the mean, it has been argued that we should dispense of the ...
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Calculated spread and mean using mean results only
Sounds fine to me. Here's an illustration which should be close enough to your scenario.
Say we have a set of $H$ datapoints. Each of these is a mean taken from $n$ individual observations, which are ...
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