Dr. Atchison - 630 Review Flashcards
1
Q
P-value
A
probability of something occurring (or not)
2
Q
Null hypothesis
A
absence of an effect
3
Q
Reject the null hypothesis
A
evidence of an effect
4
Q
Effect size
A
size/strength of a relationship
5
Q
Cohen’s d (t-test)
A
effect size
0.2 / 0.5 / 0.8
6
Q
Pearson’s r (linear regression)
A
effect size
0.1 / 0.3 / 0.5
7
Q
Type 1 error
A
false positive (boy who cried wolf, beginning)
8
Q
Type 2 error
A
false negative (boy who cried wolf, end)
9
Q
Bonferroni Correction
A
1 - 0.95^number of tests = likelihood of type 1 error
P critical (p-value needs to be less than this to avoid Type 1 error) Pcrit = alpha/number of tests (.05/n)
