Paired Samples t-test - SPSS
how2stats
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Paired Samples t-test - SPSS shows how to compare before-and-after scores using SPSS, interpret key outputs like mean differences and p-values, and stresses the need for a control group and strong score correlation to validate behavioral change.
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Usually, you have to have a control group to show that the control group isn't changing or that my treatment group is changing even more than the control group. That's when you have a firm basis for concluding that your treatment, your training, or something that you've implemented is actually having a real, reliable effect.
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