UX Glossary

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Scanability Scanning Scenarios Screen reader Screenful Scroll bar Scroll stopper Scrolling Section 508 Semantics Server-side (image map) Simultaneous menus Site map Six Sigma Standard deviation Style sheet Syntax System Usability Scale (SUS)
Scanability Scanning Scenarios Screen reader Screenful Scroll bar Scroll stopper Scrolling Section 508 Semantics Server-side (image map) Simultaneous menus Site map Six Sigma Standard deviation Style sheet Syntax System Usability Scale (SUS)

Standard deviation

In statistics and probability theory, the standard deviation shows how much variation or dispersion from the average exists. A low standard deviation indicates that the data points tend to be very close to the mean (also called expected value); a high standard deviation indicates that the data points are spread out over a large range of values.

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