Stefan Has Collected a Large Amount of Data in a Study

Multiple Choice

Stefan has collected a large amount of data in a study designed to test the effectiveness of a new drug meant to slow the progression of Alzheimer's disease.To test whether the drug was effective in a group of participants who received it,in comparison to a group that received a placebo,which type of statistics should Stefan use?

A) descriptive statistics
B) frequency statistics
C) histogram statistics
D) inferential statistics