From course:
(Practice similar questions for free)
Research methodology (research design and data collection)
» Start this Course(Practice similar questions for free)
Question:
Why is the before and after design is the best design?
Author: Shay 1vccAnswer:
This design is superior to the above two designs as it avoids extraneous variation resulting both from the passage of time and from non-comparability of the test and control areas
0 / 5 Â (0 ratings)
1 answer(s) in total