March 17, 2008

# March 17, 2008 - in the dependent variable P null the...

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

March 17 Outline I. Review of statistical power II. Calculating power with the sign test A. Assume H 0 is true ( P null = .50). Determine outcomes that allow H 0 to be rejected B. For assumed P real value, determine probability of these outcomes (from Step 1) III. Examples A. Variation in P real , N, alpha, one/two tail B. Effect on β (β = 1 – Power)

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

View Full Document
Power: the probability that the results of an experiment will allow the rejection of H 0 if the independent variable has a real effect Real effect: an effect that produces a change
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 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 ]}

### Page1 / 2

March 17, 2008 - in the dependent variable P null the...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online