1. If effect size _____________, power _____________. a. approaches -1, approach

Question

1. If effect size _____________, power _____________.

a. approaches -1, approaches 0

b. decreases; decreases

c. decreases; increases

d. approaches the mean, approaches the standard deviation

2. If the standard deviation changes from 20 to 10, what will happen to power (other things being equal)?

a. Power will become zero

b. Power will decrease

c. Power will increase

d. Power will be unaffected

3.

Other things being equal, if alpha_____________, power ___________.

Select one:

a. increases; increases

b. increases; decreases

c. approaches 0; approaches 1

d. approaches .50, approaches .50

4. If alpha __________, power decreases

a. increases (as from .01 to .05)

b. becomes negative

c. decreases (as from .05 to .01)

d. becomes 1

5. Other things being equal, if alpha_____________, power ___________.

a. decreases (as from .05 to .01); decreases

b. approaches-1, approaches 1

c. approaches 1; approaches 0

d. decreases (as from .05 to .01); increases

Explanation / Answer

1)

b. decreases; decreases

2)

c. Power will increase

3)

a. increases; increases

4)

c. decreases (as from .05 to .01)

5)

a. decreases (as from .05 to .01); decreases

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