If a correlation is perfect,
a. all the points must fall on a straight line
b. all the points must fall on a curve line
c. most the points must fall on the line, but some can miss it.
d. all the points must fall on a straight or curved line,
Question 2
A correlation of r = 0.60 exists between a set of X and Y scores. If a constant of 10 is added to each score of both distributions, the value of r will _______.
a. remain the same
b. will increase
c. decrease
d. be less meaningful
e. will increase and be less meaningful
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