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15 cards from this deck
Strength & direction of relationship between 2 variables
rrr
Between −1-1−1 and +1+1+1
r=1r = 1r=1
r=−1r = -1r=−1
r=0r = 0r=0
All points lie exactly on an upward straight line
All points lie exactly on a downward straight line
Positive correlation
Negative correlation
How close rrr is to 111 or −1-1−1
No linear relationship (not no relationship at all)
How close points are to a straight line
Both variables increase together
One variable decreases as other increases
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