1
Q
define correlation
A
the relationship between two variables
2
Q
positive correlation
A
two variables change in the same direction
3
Q
negative correlation
A
two variables tend to change in the opposite direction
4
Q
null hypothesis
A
no correlation in population from which sample comes
5
Q
non-experimental studies
A
allow us to measure naturally exisitng variables
ethical and practical
6
Q
test-retest reliability
A
stability over time or external reliability
7
Q
concurrent validity
A
assess vailidty of new questionnaire or test by comparing scores with those produced by existing measure
8
Q
A
