What type of design is a post-only design in which, after the fact, a pretest measure is constructed from preexisting data?
a. non-equivalent groups
b. regression discontinuity
c. proxy-pretest
d. separate pre-post samples
Question 2
An experimenter's confidence in the reliability of a result
a. increases with the number of observations on which it is based.
b. is highest when a between subjects design is used.
c. increases with the variability of the data.
d. decreases as the power of the statistical test used to assess the result increases.