A Psychology Instructor Analyzing Exam Scores Notices That the Better

Multiple Choice

A psychology instructor analyzing exam scores notices that the better her students performed on the lecture-based questions, the more poorly they performed on the textbook-based questions. She has discovered:

A) a zero correlation between scores on the two parts of the exam.
B) a positive correlation between scores on the two parts of the exam.
C) a negative correlation between scores on the two parts of the exam.
D) definite evidence that the students who read the textbook do not attend the lectures while those attending them do not read the text.