With the Above Study,the Outcome Variables Are Interval-Scaled

Multiple Choice

With the above study,the outcome variables are interval-scaled.Which descriptive statistics would need to be provided?

A) Means and medians for all
B) Means and standard deviations for pre- and post-test for both age categories; and both treatment groups
C) Standard deviations for both age groups,and means for both treatment groups
D) None of the above