The nurse researcher opts to use a measure of variability. Which measure of variability does the researcher recognize as being most unstable?
a. Mean
b. Median
c. Range
d. Semiquartile range
ANS: C
Feedback
A Mean is a measure of central tendency.
B Median is a measure of central tendency.
C The range is very likely to be changed by a single extreme score.
D The semiquartile range is more stable than the range; it is less likely to be changed by a single extreme score.
You might also like to view...
A patient is administered imipenem–cilastatin for the treatment of an E. coli infection. The nurse should be aware that cilastatin is combined with the imipenem for what purpose?
A) To eliminate adverse effects of imipenem administration B) To inhibit the destruction of imipenem C) To potentiate the therapeutic effects of imipenem D) To allow imipenem to cross the blood–brain barrier
The nurse is assessing the placement of a feeding tube to prevent aspiration of continuous feeding supplements. Using the aspiration technique, the nurse obtains a watery, straw-colored fluid and recognizes that this aspirate is most likely:
A) Gastric fluid B) Pleural fluid C) Fluid from the lungs D) Contents from the small intestine
Of the following nursing interventions, which would be least appropriate for a person in rehabilitation post-stroke who states "I just can't believe this happened to me. I can't wait for this to be over so I can go back to my normal life"?
a. teach all of the information the person will need to know to adapt to life after stroke b. provide reassurance and emotional support c. provide essential information, but avoid teaching at this stage d. provide direct care, ensure safety, and involve the family
Before each surgery to remove a cataract and implant a lens the surgeon, scrub nurse or technician, and circulating nurse should each verify what? (Mark all that apply.)
A) The patient's age B) There is an informed consent C) The correct IOL measurements D) The correct patient E) The correct chart