From the course: SPSS Statistics Essential Training (2019)

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Comparing paired means: Paired-samples t-test

Comparing paired means: Paired-samples t-test - SPSS Tutorial

From the course: SPSS Statistics Essential Training (2019)

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Comparing paired means: Paired-samples t-test

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- [Narrator] When you're doing practical work in the real world, you're often trying to effectuate some kind of change. You teach people how to do something, or you coach them on some practice, or you have an intervention that's supposed to produce some change from before and after. When you have that kind of data, and if your data is measured on some quantitative scale that continuous interval ratio level measurement. Then, one of the best things you can use is a paired or between samples T test where every observation gets to serve as its own control and you're looking at the reliability of changes from time 1 to time 2. Now, for this example, I'm using a data set that I made up. It's random numbers, but it works to show what's happening here. I have two variables called t1 for time 1, and t2 for time 2. And we're looking to see if there's a change for the observations from 1 to 2. There's a total of 30…

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