The nurse researcher's data contain extremes of high and low ...

[jwb375]

The nurse researcher's data contain extremes of high and low scores. The measure of central tendency that should be used in order to be least affected by extremes of high and low scores is what?
 
  a. Mean
  b. Mode
  c. Median
  d. Percentile

Question 2

The nurse researcher is using respiratory rate as a variable in a research study. The level of measurement most appropriate in this case is what?
 
  a. Nominal
  b. Ordinal
  c. Interval
  d. Ratio

[dyrone]

Answer to Question 1

ANS: A

Feedback
A The mean is affected by every score and the least affected by chance. The larger the sample size, the less affected the mean will be by a single score. The mean is the most stable, least affected by extremes, and most useful for other calculations.
B The mode is unstable and can fluctuate widely from sample to sample from the same population.
C The median is not sensitive to extremes in high and low scores; it is less stable than the mean.
D Percentile is not a measure of central tendency; the median is the 50th percentile.

Answer to Question 2

ANS: D

Feedback
A Rate is represented by a number representing frequency per minute.
B Rate is represented by a number representing frequency per minute.
C Rate is represented by a number representing frequency per minute.
D Respiratory rate can have an absolute zeroabsence of respirations.