i am doing course work and have data that is unrelated, and i believe to be interval??????
the test was for recall at diff levels of processing- so there are recalled word results and incorrect results for every participant in each of the 3 conditions.
i want to comapare two conditions at a time to find if there is a significant difference between the 2.
what test sholud i use- unrelated t-test or man-whitney u???
is my data definately ordinal?
its an emergency deadline looming.
Turn on thread page Beta
psycholgy stats test watch
- 28-03-2003 03:26
- 28-03-2003 03:27
sorry that should be is data definately interval???
- 28-03-2003 09:59
Its sounds like ratio data to me as you cant get a minus number of answers correct. Unless you are taking one set of scores away from another when it is possible to get a minus number, then it would be interval. Basically, if the data has a true zero point, it is ratio but if it can have minus numbers, it is interval.
I think you are using a repeated measures design as all of the participants are doing all three tests, which would suggest you need to use the related t-test.
Hope that helps.