PSYC 1010 Lecture Notes - Lecture 19: Sampling Distribution, Null Hypothesis, Experiment

• School: University of Guelph
• Department: Psychology
• Course: PSYC 1010
• Professor: Lana Trick

Document Summary

Researchers were interested in finding out if first or second year students did more hours of homework per night. Ten first and ten second year students were asked tor eport the number of homework/night. The difference between groups was not significant (t(9)= 2. 23, p>. 05, two tailed. Groups differed significantly (t(18)=2. 23, p0. 05, two tailed) Within subjects t (also called paired samples, related samples or repeated measures t test) You use it when you have an iv/dv design with two levels in the. You use it when your iv involves a within subject comparison that is each person is tested twice and you are comparing each person to themselves. Paired samples t tests can occur in either true experiments or quasi experiments. " Paired samples t tests use almost exactly the same procedures as the one sample t test.