Biostatistics Flashcards
1
Q
What is the alpha value?
A
Level or chance an investigator could be making a *Type 1 error
(Biostatistics- Alpha Values)
2
Q
When does a type I error occur?
A
When the study or investigators say there is a *difference between two studied interventions
-but there is actually *no difference at all in reality
(Biostatistics- Alpha Values)
3
Q
How are beta and power related?
A
As *beta decreases, the *power of the study increases
-chance of making a *type 2 error is decreased
(Biostatistics- Alpha Values)
4
Q
When is the alpha value determined?
A
A-priori
Biostatistics- Alpha Values
5
Q
What value is alpha most commonly set to?
A
- 0.05
- this means there is a *5% chance the study will make a *type 1 error
(Biostatistics- Alpha Values)
