inferential stats Flashcards
1
Q
how to calculate a wilcoxon test
A
- calculate difference between 2 scores
- rank difference smallest 1
- add up all ranks for +ve differences
- add up all ranks for -ve differences
- t = smallest value
N = number of scores( ignore 0 scores)
significant if equal to or less
2
Q
what is type 1 error
A
researcher accepts results significant when not
3
Q
what is type 2 error
A
accept null when significant
4
Q
how to calculate man whitney u test
A
- rank data in both conditions as one
- add up ranks for each condition
- place in formula
significant if equal to or less than CV