PSYC 217 Lecture 1: Week 12 Lecture Notes - 1
Document Summary
Paper due nov. 28 - full apa and refer to documents on connect. Poster presentation fri. dec 2, 5-6:30pm in life sciences centre east atrium. Go to room 1510 in lsc to drop off your poster between 12-2pm. Come dressed professionally. t and f test. Nominal iv - comparison between 2 levels of iv. Nominal iv - comparison between >2 levels of iv. Calculation is a : signal to noise ratio. Obtained t > critical t, then reject null hypothesis. This rule primarily works for non-directional research hypothesis (i. e. two-tailed tests) When you do these tests, you"re determining the zone of rejection. (see slide for graph) Result is unlikely to be due to chance. It is unlikely that the difference between the two groups has a t of 0 (see slide for graph) 2 types of error that we can make in making such decisions. Type 1 error: null hypothesis is true in the population, but we reject it.
