Concept
Version 6
Created by Boundless
Estimating the Accuracy of an Average
![Standard Deviation as Standard Error](../../../../../../../../../figures.boundless-cdn.com/17990/raw/standard-deviation-diagram.jpg)
Standard Deviation as Standard Error
For a value that is sampled with an unbiased normally distributed error, the graph depicts the proportion of samples that would fall between 0, 1, 2, and 3 standard deviations above and below the actual value.
Source
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"Standard deviation diagram."
http://commons.wikimedia.org/wiki/File:Standard_deviation_diagram.svg
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