Julie Is Analyzing Her Survey Data and Suspects That a Respondent

Multiple Choice

Julie is analyzing her survey data and suspects that a respondent has answered the second half of her survey in a response set. However, she is unable to prove it. What is the best course of action for Julie to take?

A) Include the data, because it is ultimately a completed survey
B) Discard the data, because they are potentially invalid
C) Include the data, as long as there is no experimenter bias
D) Discard the data, because of attrition