{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

lecture 11-30

lecture 11-30 - Review Buch 1910 Dec.8 5-7pm Factorial...

This preview shows pages 1–2. Sign up to view the full content.

November 30, 2004 Review: Buch 1910- Dec.8, 5-7pm Factorial Design (cont) Identifying effects To see if there are main effects, compare “marginal means” of DV Data: M=50 (Music & Caffeine) M= 60 (No Music & Caffeine) M= 70 (Music & No Caffeine) M= 60 (None) - take average of 50 & 60= 55 (Caffeine average) - take average of 70 & 60= 65 (No Caffeine average) - Main effect for caffeine: greater learning without caffeine than with - Compare music average (60) to no music average (60) no music effect - If marginal means differ, then there is a main effect for that factor (IV) But, main effects may not tell the whole story… -To see if there is an interaction effect, graph the cell means -X-axis= one IV variable (ex: Music/ No music) -Y-axis= DV variable scores (ex: 50, 60, etc.) Concl: There is an interaction effect if the lines are not parallel -Caffeine w/ music is bad but music w/o caffeine is ok Data: M=90 (M & C) M=70 (C & no M) M=70 (N.C & M) M=50 (None) Avg of caff= 80; avg of no caff= 60 Avg of music= 80; avg of no music= 60 -Conclusion: Main effect for caffeine: better scores w/ caffeine

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern