6th December 2019

esri
14

Is the test statistic the Z value?

The Z score is a test of statistical significance that helps you decide whether or not to reject the null hypothesis. The p-value is the probability that you have falsely rejected the null hypothesis. Z scores are measures of standard deviation. Both statistics are associated with the standard normal distribution.

Is a test statistic the same as AZ score?

It's very similar to a Z-score and you use it in the same way: find a cut off point, find your t score, and compare the two. You use the t statistic when you have a small sample size, or if you don't know the population standard deviation. You get this information by taking a sample and running a hypothesis test.
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