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Measuring Usability Homepage
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.

How Do You Calculate a Z-Score/ Sigma Level? ( 99 )
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.

Interactive Graph of the Standard Normal Curve ( 66 )
Use this interactive normal curve to understand how the z-score and the area of the curve are related. Offers both one and two-sided options.

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.

Individual scores of a placement examination are normally distributed with a mean of 84.2 and a stan. . . ( 1 )

Discuss how t test can be employed in hypothesis testing by the use of directional vs. nondirectiona. . . ( 5 )

How do you know when to use a t-score instead of a z-score and vice versa?. . . ( 4 )

Assume that the population of heights of male college students is approximately normally distributed. . . ( 3 )

Individual scores of a placement examination are normally distributed with a mean of 84.2 and a stan. . . ( 4 )

A cereal company claims that the mean weight of the cereal in its packets is 14 ounces. The weights . . . ( 4 )

What is the advantage of a t-score over a z-score?. . . ( 4 )