The student nurse is examining the dispersion of data in a research study. Which measurements should this student expect to review?
1. Mean, median, and mode
2. Range, variance, and standard deviation
3. Mean, range, and standard deviation
4. Measures of central tendency
Correct Answer: 2
Rationale: Measures of variability indicate the degree of dispersion or spread of the data. They include the range, variance, and standard deviation. Measures of central tendency describe the center of distribution of the data, denoting where most of the subjects lie. They include the mean, median, and mode.
You might also like to view...
Of individuals who suffer from panic attacks, ____% are women
a. 20 b. 30 c. 50 d. 70
A patient who is postoperative day 12 and recovering at home following a laparoscopic prostatectomy has reported that he is experiencing occasional "dribbling" of urine. How should the nurse best respond to this patient's concern?
A) Inform the patient that urinary control is likely to return gradually. B) Arrange for the patient to be assessed by his urologist. C) Facilitate the insertion of an indwelling urinary catheter by the home care nurse. D) Teach the patient to perform intermittent self-catheterization.
This figure provides an illustrated example of a curvilinear relationship. What does a curvilinear relationship signify? (Select all that apply.)
a. The relationship is more complex than can be illustrated by a straight line. b. The most positive value of one variable is seldom associated with the most positive value or the most negative value of the other variable. c. The value of one variable cannot be predicted if the other is known. d. A relationship represented by an arc explains a large portion of the variation in the independent variable. e. The relationship between the variables is statistically significant. f. An increase in the value of one variable may be associated with either an increase or a decrease in the value of the other.
A nurse's research question is, "What is the grief experience of women older than 30 years from rural Mexico who have a late-stage pregnancy loss?" Which aspect of the question represents the study's context?
a. Late-stage pregnancy loss b. Women older than 30 years c. Grief experience d. Rural Mexico