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The options for estimating standard deviation with a small sample size are Additionally, I propose a new formula for estimating sigma for small sample sizes .. However, A is biased (for the standard deviation, especially for small samples.
 8 Jun 2011 @NRH's answer to this question gives a nice, simple proof of the biasedness of the sample standard deviation. Here I will explicitly calculate
 Now, you need to estimate standard deviation, so n-1 is the degree of Specially for small n, sample sizes for which the estimator is commonly recommended!! then there is greater bias using sqrt{S_n^2} than using E[ \sqrt{S_{n-1}^2} ] then
 14 Apr 2014 Following Wikipedia's entry on the standard deviation, the biasedness of the estimation of a population SD given a sample depends on
 In statistics and in particular statistical theory, unbiased estimation of a standard deviation is the
 the implications that this small sample bias has for credibility procedures. . for a family of skewed distributions, the higher the standard deviation, the higher the
 I argue that as, in practice, such methods will be applied to small samples, the overestimation may not .. [1], having less bias and smaller standard deviations.
 5 Dec 2016 (See Why is sample standard deviation a biased estimator of ??) are . a few more-or-less popular estimates made from a small sample (n=2)
 28 Nov 2012
 We can simulate the sampling distribution of the sample standard deviation: 15 # population value n = 3 # small sample size to highlight t distribution tails
     
https://www.flickr.com/groups/4140397@N21/discuss/72157688914339636/, http://wallinside.com/post-62449138-joint-vision-statement.html, http://blogs.rediff.com/nghujrd/2017/09/29/manual-de-bomba-murzan-incorporated/, https://gist.github.com/e4f86e92bfc260dd6da00453d147808e, http://meristation.as.com/zonaforo/topic/2475382/