Mr. Marsh discovers that the measure of association is zero in ...

[vicotolentino]

Mr. Marsh discovers that the measure of association is zero in his data relationship. What does this mean?
 
  A) He should stop the study right away and refuse to publish.
  B) It means that there is statistical independence. The variables do not covary.
  C) He has made a mistake in his data collection.
  D) It means that there is strong covariation.

Question 2

External validity of an experiment refers to the extent to which
 
  a. the operational definitions of variables really do represent the concepts they are meant to capture.
  b. we can be confident that the experiment is testing the hypothesis we think it is testing.
  c. we can make causative statements about the relationship between the dependent and independent variables.
   d. the results of an experiment can be generalized across people, settings, times, treatments, and outcomes.

[kilada]

Answer to Question 1

B

Answer to Question 2

D

[vicotolentino]

Excellent

[olderstudent]

Gracias!