Statistics and Data Analysis for Nursing Research 2nd Edition – Test Bank
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Statistics and Data Analysis for Nursing Research 2nd Edition By Denise F. Polit – Test Bank
Chapter 1
Introduction to Data Analysis in an Evidence-Based Practice Environment
1.1. Statistical skills can play an important role in nursing because they help nurses to:
a. Calculate appropriate doses and clinical measurements
b. Generate clinical questions
*c. Evaluate and generate research evidence for nursing practice
d. Make better use of computers and the Internet
1.2. In the context of a quantitative study, a concept is called a(n):
a. Operational definition
*b. Variable
c. Statistic
d. Parameter
1.3. An example of a variable is:
*a. Systolic blood pressure
b. Pi (π)
c. 52.5 kilograms
d. Number of seconds in a minute
1.4. An example of a datum is:
a. Systolic blood pressure
b. Pi (π)
*c. 52.5 kilograms
d. Number of seconds in a minute
1.5. Which of the following is not a component of a research question?
a. An independent variable
b. A population
*c. A sample
d. A dependent variable
1.6. Identify the dependent variable in the following: In elderly men, what is the effect of chronic fatigue on level of depression?
a. Age
b. Sex
c. Chronic fatigue
*d. Depression
1.7. Which of the following is a continuous variable?
a. Number of pages in a book
*b. Age at death
c. Falls during hospitalization
d. Number of times married
1.8. Measurement is the assignment of numbers to characteristics of people or objects according to specified _________ . (Fill in the blank.)
*a. Rules
b. Definitions
c. Concepts
d. Parameters
1.9. The measurement level that classifies attributes, indicates magnitude, and has equal intervals between values, but does not have a rational zero, is:
a. Nominal
b. Ordinal
*c. Interval
d. Ratio
1.10. The measurement level that is sometimes called categorical or qualitative is:
*a. Nominal
b. Ordinal
c. Interval
d. Ratio
1.11. It is not meaningful to calculate an arithmetic average with data from which of the following?
a. Nominal measures
b. Ordinal measures
*c. Nominal and ordinal measures
d. All measures can be meaningfully averaged.
1.12. Degree of pain measured as none, a little, or a lot is measured on which of the following scales?
a. Nominal
*b. Ordinal
c. Interval
d. Ratio
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