Inferential Statistics

Question 1

Type 1 error

Answer 1

Incorrectly reject null

Question 2

Type 2 error

Answer 2

Fail to reject null

Question 3

Statistical power

Answer 3

The probability of correctly rejecting null
Ranges from 0-1 we aim for 0.8 (80%)

Question 4

Factors affecting power

Answer 4

Effect size - strength of difference between groups
Sig level
Sample size
Choice of test (parametric/ non)
Experimental design