If a correlation coefficient that you expected to be fairly high, ...

[Brittanyd9008]

If a correlation coefficient that you expected to be fairly high, turns out to be very low, you should investigate whether there is a:
 
  a. restrictive range on one or both variables.
  b. curvilinear relationship between the variables.
  c. third variable inhibiting the relationship.
  d. restrictive range on one or both variables and a curvilinear relationship between the variables.

Question 2

The problem of _____ can often be identified by using a _____.
 
  a. causality; point biserial correlation
  b. directionality; phi coefficient
  c. third variables; partial correlation
  d. restrictive range; point biserial correlation

[jessofishing]

Answer to Question 1

d

Answer to Question 2

c

[Brittanyd9008]

Excellent

[lindahyatt42]

Gracias!