L12 - Inferential Analysis - Related T-test, Unrelated T-test & Pearson’s R (Parametric Tests)

Question 1

Related t-test

Answer 1

• used when wish to test a difference
• design is repeated measures
• data should be interval
• uses (N-1)
• parametric test

Question 2

What does (N-1) mean

Answer 2

Number of participants take away 1

Question 3

Unrelated t-test

Answer 3

• used when looking for a test of difference
• used in independent groups design
• used when data is interval
• used (n-2)
• parametric test

Question 4

what does n-2 mean

Answer 4

Number of participants take away 2

Question 5

Pearson’s R

Answer 5

• used for correlations or relationships between variables
• used for interval data
• parametric test

Question 6

For it to be significant what needs to be larger?

Answer 6

For all 3 parametric tests:
- the calculated value must be greater than or equal to the critical value (value in table)