# Questions tagged [standard-error]

Refers to the standard deviation of the sampling distribution of a statistic calculated from a sample. Standard errors are often required when forming confidence intervals or testing hypotheses about the population from which the statistic was sampled.

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### Delta Method Average Marginal Effects Multinomial Logit

Following the incredible demonstration in Statalist by Jeff Pitblado on how to calculate - using the Delta Method - the Standard Errors for Average Marginal Effects of a Logit Model. Q: What would ...
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### The Standard Error in R language lm (linear regression) is Standard Deviation or Standard Error of the Mean?

When we are estimating the coefficient in R, "Std Err" will be produced by "lm". Is it Std or SEM? How is it calculated? Run lm function with any R data set will give an example.
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### Standard error of median small sample

I tried to find this question but what I've found provides answers for normal distributions and large sample sizes. I'm analyzing some data from an experiment with different groups. Each group has ...
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### How to calculate standard error of the difference between two random variables which are dependent?

I know that standard error between two independent variable can be calculated as below. SE(1,2) = SQR(SE1^2 + SE2^2) where SE1 is standard error for variable 1, SE2 is standard error for variable 2. ...
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### The link between error bars representing the standard error of the mean and statistical significance

I have read the following on many websites: What can you conclude when standard error bars do not overlap? When standard error (SE) bars do not overlap, you cannot be sure that the ...
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### Sample size for a research paper (for Mean+SD type of data)

In my research paper I proposed a software and have experiment it on 72 users. But the reviewer has objected on the sample size and asked to justify it or increase it. below is the results of our ...
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### Multivariate statistics sampling and standard error problem

I have a group of workers listening to audio from many various audio files and typing it out. I want to compare the average transcription accuracy of these old workers with 2 new workers. I have a ...
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### Is it statistically valid to compare error measures for different sized samples?

I have forecasts for different sized samples using a variety of methods like DES (Double Exponential Smoothing), SES, MA and WA (Weighted Average) to test the strength of the forecasting models. The ...
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### Why don't we use the n-1 correction for standard error of sample proportion?

From my understanding, when we construct a confidence interval for a sample mean with a sample size of n, we try to estimate the standard deviation of the sampling distribution σ_{\overline{x}} = \...
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### Standard Error in Auto correlated Data

I have time-series data generated via Metropolis algorithm - Monte Carlo simulations. Since these data must have some correlation between them, the formula of the standard error for IIDs variable must ...
192 views