If a correlation is perfect, a. all the points must fall on a ...

[skymedlock]

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

[sokh]

Answer to Question 1

D

Answer to Question 2

A