28 Jan A nurse researcher conducted

Week 3 Quiz

Question 1

Which of the following statements is true regarding credibility of quantitative research studies?

Answers:

The results of statistical testing have direct meaning.

Evaluating the credibility of a study typically involves a careful assessment of methodologic decisions.

Support of a researcher’s hypothesis through statistical testing offers proof of its veracity.

A correlation between two variables indicates that the independent variable caused the dependent variable.

Question 2

A parameter is a characteristic of which of the following?

Answers:

Population

Frequency distribution

Sample

Normal curve

Question 3

A survey question asks subjects to respond to the following statement: “The overall hospital experience that I received during my hospital stay considered my needs as an individual.” They were asked to identify, on a five-point scale, the degree to which they agreed or disagreed with the statement. This is an example of which type of scale?

Answers:

Social scale

Likert scale

Visual analog scale

Differential scale

Question 4

Which of the following is an example of a nominal measurement?

Answers:

Age in years

Grams of carbohydrate intake

Emotional intelligence quotients

Hand dominance (right or left)

Question 5

The purpose of evaluating the evidence that emanates from research articles is to do which of the following?

Answers:

Maintain licensure as a professional nurse

Implement protocols already established in one’s clinical area

Improve one’s clinical assessment skills

Decide whether recommendations might be implemented

Question 6

Statistically significant means which of the following?

Answers:

The study findings are important.

The study results are meaningful.

It is unlikely that the results are due to chance.

The hypothesis has been proven.

Question 7

Sampling may be defined as which of the following?

Answers:

Selection of an accessible population for a study

Selection of a subset of a population to represent the entire population

Assignment of study participants to treatment groups

Technique for ensuring that every element in the population has an equal chance of being included in the study

Question 8

Information about the precision of results typically is communication in the form of which of the following?

Answers:

Significance levels

Effect size estimates

Correlation coefficients

Confidence intervals

Question 9

_________________ is defined as the level of measurement that classifies and ranks people in terms of the degree to which they possess the attribute of interest.

Answers:

Nominal

Ordinal

Interval

Ratio

Question 10

Blood type is measured on which of the following scale?

Answers:

Nominal

Ordinal

Interval

Ratio

Question 11

Which of the following is an example of an ordinal measurement?

Answers:

Gender (male or female)

Milligrams of a medication dosage

Levels of education (associate’s degree, bachelor’s degree, master’s degree)

Score on the HESI preadmission or first year examination for nursing

Question 12

Which of the following is an example of ratio measurement?

Answers:

Likert scale response to questions

Twenty-four-hour oral cc intake

Eye color (blue, brown, hazel, green)

Ability to perform activities of daily living

Question 13

Which correlation coefficient shows the strongest relationship between two variables?

Answers:

–0.821

–0.653

0

0.759

Question 14

Which of the following types of sampling is considered to be the weakest for quantitative studies?

Answers:

Convenience

Quota

Purposive

Systematic

Question 15

A researcher must select a sample that is representative of the population. Which of the following venues would be most practical for recruitment of patients with primary hypertension?

Answers:

Prenatal clinic

High school clinic

Primary care clinic

Acute care hospital

Question 16

When a researcher makes a Type II error (concludes that no relationship between the independent and dependent variable exists when in fact it does), this could occur because of which of the following? Select all that apply.

Answers:

An anomalous sample

Unreliable data collection instruments

Problems with adequately implementing the intervention

A large sample size

Question 17

The Results section of a research article summarizes results of which of the following?

Answers:

Study conclusions

Statistical analyses

Inferences

Interpretation of study findings

Question 18

A nurse is investigating the rate of immunization at a community-based clinic. Selection bias is most likely to be present in which of the following samples?

Answers:

Random sample of clients accessing an urgent care clinic

Random sample of records of school clinic vaccination rates

Convenience sample of mothers who bring children to clinic for vaccinations

Convenience sample of high school students who have received required vaccinations

Question 19

Which of the following is an example of a probability sampling method?

Answers:

Convenience sampling

Systematic sampling

Consecutive sampling

Quota sampling

Question 20

A nurse researcher conducted a study examining the effectiveness of an exercise intervention with overweight adults. There were 250 adults recruited from a primary care clinic. Only 82 subjects completed the study. The 82 subjects represent what type of sample?

Answers:

The target population

The accessible population

The recruited sample

The actual sample