Difference between 2 related samples

Question 1

What are the parametric and non-parametric tests?

Answer 1

Parametric - Paired t-test

Non-parametric - Wilcoxon Signed Rank test

Question 2

How is the paired t-test difference from other tests?

Answer 2

You are checking the DIFFERENCE between the RELATED data points are NORMALLY distributed.

So you focus is the difference between the data, not the data itself (?)

Question 3

What does a Wilcoxon test produce?

Answer 3

T statistic - Lowest value in the sum of ranks box on SPSS output
P value

Question 4

We report the Non-Sero Difference with the Wilcoxon. How do you work this out?

Answer 4

The total number of pairs - The number of ‘ties’

This is clearer when you use SPSS!