Statistics and Data Analysis for Nursing Research 2nd Edition By Denise F. Polit – Test Bank

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. The 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