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Measuring Usability Homepage
Quantitative Usability, Statistics & Six Sigma by Jeff Sauro

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Tag: Quality Level

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The following pages have the tag Quality Level associated with them. The number of users that have also tagged the page ' Quality Level ' is in parenthesis.

How Do You Calculate a Z-Score/ Sigma Level? ( 242 )
The basics of z-scores are discussed plus an example of raw usability data converted into z-scores including three of Nielsen's five usability attributes.

What is an Acceptable Level of Quality for Usability? ( 125 )
Is attaining Six Sigma a reasonable or even attainable goal for usability? A product's usability is the sum of several usability measures. Each Relative movement in your sigma value is good predictor of usability improvements.

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