Deck 1: Introduction to Data Analysis in an Evidence-Based Practice Environment

Question 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

Answer 1

C

Question 2

In the context of a quantitative study, a concept is called a(n):

A) Operational definition
B) Variable
C) Statistic
D) Parameter

Answer 2

B

Question 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

Answer 3

A

Question 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

Question 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

Question 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

Question 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

Question 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

Question 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

Question 10

The measurement level that is sometimes called categorical or qualitative is:

A) Nominal
B) Ordinal
C) Interval
D) Ratio

Question 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.

Question 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

Question 13

Body temperature is measured on which of the following scales?

A) Nominal
B) Ordinal
C) Interval
D) Ratio

Question 14

Type of birth (vaginal or cesarean) is measured on the:

A) Nominal scale
B) Ordinal scale
C) Interval scale
D) Ratio scale

Question 15

Which of the following is a ratio-level measure?

A) Dietary cholesterol intake (mg)
B) Cognitive impairment on a 50-item scale
C) Pain on a 10-point scale
D) Military rank

Question 16

Ratio-level measures are different than any other level by virtue of which property?

A) Classification
B) Equal intervals between values
C) A true, rational zero
D) Indication of magnitude

Question 17

Researchers typically collect data from a ________ and hope to generalize their results to a _____________.

A) Population, sample
B) Statistic, parameter
C) Sample, statistic
D) Sample, population

Question 18

If the average amount of sleep for all people in the United States was 7.6 hours per night, this average would be a(n) _________ of the population of U.S. residents. (Fill in the blank.)

A) Variable
B) Parameter
C) Statistic
D) Datum

Question 19

If a nurse researcher measured the anxiety level of 100 hospitalized children, the children's average score on an anxiety scale would be a(n):

A) Variable
B) Parameter
C) Statistic
D) Operational definition

Question 20

Statistical methods that are used to draw conclusions about a population are called:

A) Inferential statistics
B) Descriptive statistics
C) Univariate statistics
D) Multivariate statistics