Which of the graphic representations illustrates a randomized ...

[jace]

Which of the graphic representations illustrates a randomized experimental interventional design with pre- and posttest?
 
  A) R X O X
  B) R O R X
  C) R X O O
  D) R O X O

Question 2

When doing a computerized search for quantitative studies on a topic:
 
  A) The best place to begin is to use a search engine such as Yahoo or Google
  B) The primary keyword to use in the search typically would be the population
  C) The keywords to start the search typically would be the independent and dependent variables
  D) The specific subject headings used in each bibliographic database would have to be learned

[ririgirl15]

Answer to Question 1

D
Feedback:
Experimental designs can be depicted graphically using symbols to represent features of the design. In these diagrams, the convention is that R stands for randomization to treatment groups, X represents receipt of the intervention, and O is the measurement of outcomes. So, for example, a pretest-posttest design would be depicted as follows: R O X O. The other answers do not illustrate the correct order of elements.

Answer to Question 2

C

[jace]

Thank you

[ririgirl15]

Happy to help you