A major source of error variance in a study is often due to a. ...

[acc299]

A major source of error variance in a study is often due to
 
  a. the independent variable.
  b. systematic variance.
  c. individual differences among subjects.
  d. carefully controlled factors being manipulated.

Question 2

Dr. Cortez is carrying out an experiment dealing with the effects of caffeine on learning. His independent variable consists of two groups of college students, where one group receives 10mg of caffeine, and the other group receives 30mg of caffeine.
 
  The dependent variable consists of the frequency of items recalled correctly from a previously memorized word list. In this case, Dr. Cortez is hoping to find
 
   a. systematic variance from the extraneous variables.
   b. nonsystematic variance from the independent variable.
   c. systematic variance from the independent variable.
   d. none of the above

[AISCAMPING]

Answer to Question 1

c

Answer to Question 2

c

[acc299]

Excellent

[Alyson.hiatt@yahoo.com]

Thanks for the timely response, appreciate it