pearsons r Flashcards
1
Q
what happens to r if range of data is restricted -correlation
A
increases
2
Q
what happens to r if range of data is restricted -looks like
A
a straight lin
3
Q
what happens to r if range of data is restricted - accuracy
A
more accuracy
4
Q
what happens to r if use greater accuracy
A
easier to read data
5
Q
what happens to r if use less accuracy
A
c is weaker
data quality not as high
6
Q
what is the absolute magnitude of a correlation
A
effect size
depends on range of scores
7
Q
how to convert cohens d to r
A
r=/d2 / (d2+4)
8
Q
what is besd
A
bionominal effect size display
9
Q
how to convert r to besd
A
0.5+r/2 vs 0.5-r/2 then turn to percentage
