assumtions of correlation Flashcards
1
Q
before conducting data make sure
A
linearity-relation (correlation is linear)
para- assumption-normal dist, no outliers, interval and ratio
2
Q
if meet assumptions
A
pearsons r correlation
3
Q
if violate
A
spearman rho correlation
4
Q
check linearity
A
vairbles linear relation= straight line
non linear (curvlinear= violation
5
Q
outliers
A
extremities (high or low) effect correlation coeffienct
calc z score= if bigger 3.29=THERE IS OUTLIERS
6
Q
normalities
A
normally-pearson-para
not normally- spearman-non para
7
Q
what does cohen coeffiecnt purpose
A
effect size
