correlation studies Flashcards
1
Q
what is correlation?
A
measure of the extent to which two variables are related
2
Q
positive correlation
A
increase in one variable is associated with an increase in the other
3
Q
negative correlation
A
increase in one variable is associated with a decrease in the other
4
Q
no correlation
A
when there is no relationship between variables.
5
Q
what is correlation coefficient?
A
a value between 0 and 1, and the closer to 1 the score is, the stronger the relationship between the variables. This value can be both positive e.g. 0.63, or negative -0.63.
6
Q
does correlation mean causation?
A
no
