Walden NURS 3151C week 3 quiz

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QUESTION 1

Quantitative research can be described as

objective and formal

subjective and formal

objective and informal

subjective and informal

QUESTION 2

A quantitative research study

must have ratio level data

must have at least interval level data

uses participant observation

uses standardized measures

QUESTION 3

The blueprint for quantitative studies is termed

research design

research goal

research objective

research process

QUESTION 4

Methods to collect data in a descriptive quantitative study
could include all but

administering a questionnaire to participants

analyzing an existing data set

manipulating the independent variable for positive
reinforcement of desired behaviors

observing participants responses to an intervention

QUESTION 5

Correlation research may be used to

describe observations of nurse bedside reporting techniques

examine the association between patient handoff and patient
satisfaction

participate in a cultural experience to understand the
participant’s pain reactions

review medical records to obtain historical data

QUESTION 6

The results of correlation research

implies that one variable causes a change in another

implies that one variable does not cause a change in another

implies there may be a relationship between the two
variables where one may influence the outcome of the other

implies there is a cause-and-effect relationship between the
two dependent variables

QUESTION 7

Home care nurses are observed as they provide skin care to
individuals with hospital acquired pressure ulcers. On average, the nurses
spend at least ten minutes more providing this care than they normally do. This
is an example of what concept relevant to quantitative research?

Bias

Control

Hawthorne effect

Placebo effect

QUESTION 8

How is a sample different from a population?

A sample is larger than a population.

A population is larger than a sample.

A population is part of a sample

There is no difference, the terms mean the same thing in
research

QUESTION 9

A researcher is studying the relationship between fatigue
and stress among staff nurses in an acute care setting. 100 nurses were
recruited and completed a self-administered questionnaire. This can add bias to
the study because

This requires someone to read the questions to the
participant to be sure they are interpreted accurately.

The researcher isn’t completely sure who completed the
questionnaire.

The questionnaire may not be completed within the required
time frame.

The questionnaire must be completed in the presence of the
researcher.

QUESTION 10

When selecting a questionnaire to be used as a research
instrument, the researcher must be sure the instrument is ____________.

Credible and trustworthy

Credible and valid

Reliable and valid

Reliable and trustworthy

QUESTION 11

A causal relationship is said to exist

When the dependent variable changes as the independent
variable is manipulated.

When the independent variable changes as the dependent
variable is manipulated.

There is no change when either of the variables are
manipulated.

Both variables change when the independent variable is
manipulated.

QUESTION 12

A researcher wants to know whether nursing fatigue is one
cause of poor patient satisfaction scores. The independent variable is

Nursing fatigue

Patient satisfaction scores

Both nursing fatigue and patient satisfaction scores

Number of hours worked by the nurse during the week previous
to measuring patient satisfaction scores.

QUESTION 13

A sampling technique used in experimental design includes

Purposeful

Randomization

Snowball

Voluntary selection

QUESTION 14

Causality is tested through which of the following?

Grounded theory

Experimental research

All quantitative research

Descriptive research

QUESTION 15

Why does subject attrition affect internal validity?

A study in which the majority of the subjects die calls into
question whether the treatment itself is safe

Subjects who drop out may differ from those who stay in the
study, in terms of an important extraneous variable.

Type I error is almost guaranteed with very unequal sample
sizes.

Subject mortality may result in a sample that is so much
smaller than anticipated that type II error may result.

QUESTION 16

A questionnaire used in a study is said to be reliable if
the results obtained are

believable

consistent

measureable

random

QUESTION 17

Match the description of the research with the type of
design

The Life Impact Rating Scale was administered to college
freshmen

The relationship between the lack of sleep and medication
errors were analyzed

It was determined low potassium levels in a cardiac patient
caused the tachycardia

Students completed an inventory identifying coping
mechanisms, attended a two day course on how to succeed in college, and then
completed the same inventory two months later to determine if the workshop was
effective

Descriptive

Correlational

Cause and effect

Pre-test – post-test

QUESTION 18

In research, rigor involves adhering to the study design,
paying strict attention to detail, and being sure all data collected is
accurate.

True

False

QUESTION 19

The plan for data analysis can be developed once the data
collection is complete.

True

False

QUESTION 20

A mixed methods research design means two types of
quantitative studies are used to collect and analyze the data.

True

False

QUESTION 21

In quantitative experimental research, the independent
variable is manipulated to determine the effects on the dependent variable.

True

False

QUESTION 22

A research may choose to conduct a pilot study before the
main study is conducted in order to determine if the data collection tool will
measure the dependent variable accurately.

True

False

QUESTION 23

A random table of numbers may be used to select participants
for an experimental study.

True

False

QUESTION 24

The pre-test post design is used in correlation research to
show there is a relationship between the pre and post interventions.

True

False

QUESTION 25

The researcher must select an appropriate design for a study
in order to eliminate error and make critique of the findings possible.

True

False

QUESTION 26

The difference between probability sampling and
nonprobability sampling is the chance of a participant being selected to
participate in the study.

True

False

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