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

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Tag: Critical Value

Pages

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

How Do You Calculate a Z-Score/ Sigma Level? ( 105 )
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 Critical Value associated with them. The number of users that have also tagged the question ' Critical Value ' is in parenthesis.

In general, what is a “Critical Value” or “Cut-Off Score” of a test statistic. . . ( 2 )

Based on information obtained from a sample of 54, a 98% confidence interval for the average profit . . . ( 3 )

An engineer in an automotive factory wishes to know what the tire pressure is on all cars leaving th. . . ( 4 )

An engineer in an automotive factory wishes to know what the tire pressure is on all cars leaving th. . . ( 4 )

Determine the critical value Za/2 that corresponds to 94% level of confidence Compute the 90% con. . . ( 4 )

In a 0ne-tail test (l side) with z score of 1.645, what are the percentages for critical value and n. . . ( 6 )