1.What are the problems with variables? (Select all that apply.)
a.Vary from subject to subject
b.Determined through statistics
c.Difficult to account for them
d.Challenging to explain in relation to the study TOPICic
e.Testing whether a correlation exists between results

2.The nurse is caring for a patient 2 hours after a left above-the-knee amputation. The patient states, My left leg is really hurting, and that medicine you gave me earlier didn‘t help. Which response is the most therapeutic, if made by the nurse?
a.That‘s impossible!
b.You‘ll have to talk to your doctor.
c.Keep your chin up.
d.I will call your physician.