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Quantitative Usability, Statistics & Six Sigma by Jeff Sauro

Tags

Tag: T score

Pages

The following pages have the tag T score associated with them. The number of users that have also tagged the page ' T score ' is in parenthesis.

Z-Score to Percentile Calculator ( 147 )
Look up the area under the normal curve (1 or two-sided areas) from a standard score (Z-score).

What's a Z-Score and Why Use it in Usability Testing? ( 133 )
This common statistical way of describing data can be used in usability testing to standardize disparate data types to allow easy comparison between products or versions and providing a universal way of assessing quality.

Percentile to Z-Score Calculator ( 116 )
Enter the area under the normal curve (a proportion between 0 & 1) and get the Z-critical value.

Questions

The following questions have the tag T score associated with them. The number of users that have also tagged the question ' T score ' is in parenthesis.

Given a mean score of 70, standard deviation of 15,percentile of 23.Find the Z score,T score and raw. . . ( 4 )

The lowest 25% of the normal distribution falls below what z-score and t-score. . . ( 4 )