chapter 11 Flashcards
1
Q
What is Power
A
- The ability to detect an effect when one is present
- Probability of rejecting the null
2
Q
A priori uses:
A
- before
- determines sample size necessary to detect an effect
3
Q
A posterior uses:
A
- after
- determining whether sample size and research design were adequate to detect an effect
4
Q
Power and Beta relationship
A
Power + Beta = 1
5
Q
The effect that Effect Size has on power
A
The larger the effect size, the higher the power.
6
Q
If we chose a value of α very near ZERO, β will typically be very close to one and the test will have very ________
A
low power
7
Q
If we were to chose a value of α near one, β would be close to zero, and the test would have very ________
A
high power
