{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

March 14, 2008

# March 14, 2008 - if the independent variable has a real...

This preview shows pages 1–3. Sign up to view the full content.

March 14 Outline I. Directional hypotheses (continued) A. When to use B. Illustration C. “One tail” vs. “Two tail” II. Statistical “ significance III. Chapter 11: Statistical power A. Real effect B. Use of power IV. Calculating power with the sign test A. P null B. P real C. Steps 1. Assume H 0 is true. Determine outcomes that allow H 0 to be rejected 2. For assumed P real value, determine probability of these outcomes (from Step 1)

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

View Full Document
Significant: H 0 has been rejected (a conclusion that the results are due to the independent variable) Power: the probability that the results of an experiment will allow the rejection of H
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: if the independent variable has a real effect Real effect: an effect that produces a change in the dependent variable P null : the probability of getting a plus with any participant in the sample of an experiment when the independent variable has no effect (P null = .50) P real : the probability of getting a plus with any participant in the sample of an experiment when the independent variable has a real effect; also, the proportion of pluses in the population if the experiment were done on the entire population and the independent variable has a real effect...
View Full 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