The BEST way to handle missing values when analyzing the data is to:
A) leave the response blank.
B) discard the record or questionnaire with missing values.
C) substitute the sample mean for the missing value.
D) both A and B are correct. E) there is no single best way for handling missing values; rather, their treatment depends on the purpose of the study, the incidence of missing values, and the methods that will be used to analyze the data.