relationships between two variables Flashcards
1
Q
what is a correlation coefficient
A
a value between -1 (strong negative correlation) and 1 (strong positive correlation) which indicates the level of correlation
2
Q
what does a null hypothesis predict the correlation coefficient to be
A
0- no correlation
3
Q
what is the parametric test for correlation
A
Pearson’s product moment correlation
4
Q
what is the nonparametric test for correlation
A
spearman’s rank correlation
5
Q
is monotonic data a positive or negative correlation
A
one that shows a positive correlation
6
Q
what does data have to be in order to use its correlation to predict results
A
it must be monotonic and continuous
