Using Campbell and Stanley's notation, an experimental design is ...

[stephzh]

Using Campbell and Stanley's notation, an experimental design is illustrated as O1 X1 O2 X2 O3 . This design involves _____ treatment levels.
 
  a. one c. three
  b. two d. four

Question 2

Using Campbell and Stanley's notation, an experimental design is illustrated as O1 X1 O2 X2 O3 . This design involves _____ measures of the dependent variable
 
  a. one c. three
  b. two d. four

[cclemon1]

Answer to Question 1

B
X denotes a treatment while O denotes an observation.

Answer to Question 2

C
X denotes a treatment while O denotes an observation.