A Survey Reports How Many High School Students Say They

Multiple Choice

A survey reports how many high school students say they were "physically abused." Before we decide how seriously to take these results,which questions do we need to have answered?​

A) What were they told to include as examples of physical abuse?
B) ​How many of them fought back after being physically abused?
C) ​How many of them were seniors, juniors, and sophomores?
D) ​Was this a double-blind study?