unrelated and related t tests Flashcards
1
Q
what are 3 justifications unrelated t test
A
- testing for a difference
- interval data
- unrelated design (independent groups)
2
Q
what is the calculated value sign for the unrelated t test
A
t
3
Q
how many N numbers are there in the unrelated t test
A
2N values so have to add together and then take away 1 from each group of participants
Na + Nb - 2
4
Q
what do you do with any participants who got worse so were assigned a minus sign
A
ignore any minus (-) signs
5
Q
what are the 3 justifications for using a related t test
A
- testing for a difference
- interval data
- related design (repeated measures/matched pairs)
6
Q
what is the calculated value sign for the related t test
A
t
7
Q
how many N numbers do you have in the related t test and what do you do to them
A
1 group so to calculate N number do number of participants minus 1
N - 1
