When you give patients nitroglycerin, they sometimes develop a headache. This would be called a(n):

A correlation coefficient of less than 1.0 is due to which of the following?

A) Random error B) Constant systematic error C) Absence of error D) Proportional systematic error

Brainstem auditory evoked response (BAER) is useful in diagnosing ________.

A. auditory tumors B. hearing loss C. a ruptured ear drum D. vestibular dysfunction