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

Tags

Tag: mean

Related Tags

Tag Name #
Z-Score 15
Process Sigma 15
Quality Level 14
Variance 5

Pages

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

How Do You Calculate a Z-Score/ Sigma Level? ( 3 )
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.

Questions

The following questions have the tag mean associated with them. The number of users that have also tagged the question ' mean ' is in parenthesis.

which type of data set can the mean not be calculated?. . . ( 1 )