query: Estimated standard deviation of difference between means in case of known and unknown variance?
positive_passages.docid: 153056
positive_passages.text: From where term $\left(\frac{1}{n}+\frac{1}{m}\right)$ came in estimated variance of $\bar x - \bar y$
negative_passages.docid: 85588
negative_passages.text: How variance is defined?
negative_passages.docid: 138529
negative_passages.text: Why is the standard deviation defined as sqrt of the variance and not as the sqrt of sum of squares over N?
negative_passages.docid: 104019
negative_passages.text: Computing the Variance of an MLE
negative_passages.docid: 96914
negative_passages.text: What does the size of the standard deviation mean?
negative_passages.docid: 21311
negative_passages.text: Is there a non-parametric Coefficient of Variation?
negative_passages.docid: 94870
negative_passages.text: Testing for significance between means, having one normal distributed sample and one non normal distributed
negative_passages.docid: 116209
negative_passages.text: Variance is the squared difference - why not to the 3, or 4 instead?
negative_passages.docid: 89511
negative_passages.text: Calculating MEAN and STANDARD DEVIATION confussed
negative_passages.docid: 98060
negative_passages.text: Mean and variance of inverse of a normal RV
negative_passages.docid: 103357
negative_passages.text: Estimate the population variance from a set of means
negative_passages.docid: 137654
negative_passages.text: Sample Standard Deviation vs. Population Standard Deviation
negative_passages.docid: 69458
negative_passages.text: Interpretation of Standard Deviation independent of the distribution?
negative_passages.docid: 134108
negative_passages.text: Quantify Difference/Distance between Lognormal distributions
negative_passages.docid: 19625
negative_passages.text: Difference between standard error and standard deviation
negative_passages.docid: 135907
negative_passages.text: Area within a given number of standard deviations from given mean
negative_passages.docid: 122761
negative_passages.text: Confidence interval around difference of regression coefficients