Question 1

Researchers study the impact of internalized bias on patient care. Nurses complete a survey which determines a score for their internalized bias from 0-100. Without knowing the internalized bias score, patients are asked to rank the subsequent care they receive from the nurse as poor, fair, good or exemplary. In this study your independent variable is measured at what level of measurement?

Accepted Answer

D

Question 2

Researchers study the impact of internalized bias on patient care. Nurses complete a survey which determines a score for their internalized bias from 0-100. Without knowing the internalized bias score, patients are asked to rank the subsequent care they receive from the nurse as poor, fair, good or exemplary. In this study your dependent variable is measured at what level of measurement?

Accepted Answer

The dependent variable, which is the patient's ranking of care, is measured at the ordinal level because it involves ordered categories (poor, fair, good, exemplary) without a consistent difference between them.

Question 3

Researchers study the impact of internalized bias on patient care. Nurses complete a survey which determines a score for their internalized bias from 0-100. Without knowing the internalized bias score, patients are asked to rank the subsequent care they receive from the nurse as poor, fair, good or exemplary. In this study what type of variable is your independent variable?

Accepted Answer

The independent variable, internalized bias score, is continuous as it is measured on a scale from 0 to 100.

Question 4

Researchers study the impact of internalized bias on patient care. Nurses complete a survey which determines a score for their internalized bias from 0-100. Without knowing the internalized bias score, patients are asked to rank the subsequent care they receive from the nurse as poor, fair, good or exemplary. In this study what is your dependent variable?

Accepted Answer

The dependent variable is the ranking of care (poor, fair, good, exemplary), which is an ordinal variable as it represents categories with a meaningful order but not equal intervals between them.

Question 5

A study examines the relationship between interpersonal violence and health in women. They include an independent variable of exposure to violence from an intimate partner, other personal violence or both. The independent variable is measured at what level?

Accepted Answer

The independent variable is measured at the nominal level because it categorizes the type of violence exposure without implying any order or magnitude.

Question 6

You are asked to answer a question about the quality of your nurse manager's interpersonal interactions with colleagues and patients as part of her annual evaluation. The options are poor, fair, strong. You know this means:

Accepted Answer

The options "poor," "fair," and "strong" indicate an ordinal level of measurement, where the categories have a meaningful order but the intervals between them are not necessarily equal.

Question 7

You are asked to rank the quality of your nurse manager's interpersonal interactions with colleagues and patients on a Likert scale of 1-7. You know this means the data can be analyzed at what level.

Accepted Answer

The answer of You are asked to rank the quality...

Question 8

You are interested in studying nursing engagement and wellbeing after the nursing licensing requirements changed in your state. You randomly select 10 hospitals and outpatient centers throughout the state and survey the 2,400 nurses that work there. The 2,400 nurses are an example of:

Accepted Answer

The 2,400 nurses surveyed represent a sample because they are a subset of the larger population of all nurses in the state.

Question 9

You are interested in studying the discharge time for surgical patients on your service in the past three months. You determine that this data is available for all surgical patients on your service in the past three months utilizing a basic electronic medical record search. Your budget supports this work so you decide to collect data on all the patients involved. Your study includes:

Accepted Answer

Since you are collecting data on all surgical patients on your service in the past three months, your study includes the entire population of interest, not just a sample.

Question 10

Researchers examine the impact of nonpharmacologic therapies on vasomotor symptoms. The therapies are recorded as yes or no to the use of acupuncture, exercise, relaxation, yoga, vitamin E or Omega-3 fatty acids. This is an example of what level of measurement?

Accepted Answer

The therapies are recorded as yes or no, which is a nominal level of measurement.

Question 11

Researchers examine the role of nonpharmacologic therapies on vasomotor symptom management in menopausal women. Subjects in the study are asked to keep a journal with any vasomotor symptoms they experience and how the nonpharmacologic therapies impact those symptoms. This is an example of what type of data?

Accepted Answer

The data collected in the journals are descriptive and pertain to the experiences and perceptions of the subjects, which are qualitative in nature.

Question 12

Researchers examine the impact of Omega-3 fatty acids on vasomotor symptoms in menopausal women. Subjects in the study are given either a placebo (0g daily), 1g daily or 1.8g daily and asked to record any vasomotor symptoms they experience. The Omega-3 fatty acid variable is an example of what type of data?

Accepted Answer

The answer of Researchers examine the impact of Omega-3 fatty...

Question 13

Researchers examine the impact of Omega-3 fatty acids on vasomotor symptoms in menopausal women. Subjects in the study are given either a placebo (0g daily), 1g daily or 1.8g daily and asked to record the level of the vasomotor symptoms they experience on a scale of 0-10 each day. The level of vasomotor symptoms is an example of what type of data?

Accepted Answer

The answer of Researchers examine the impact of Omega-3 fatty...

Question 14

A study examines the relationship between educational preparation and scores on a cultural competency exam. Subjects included are nurses with an associate's degree, nurses with a baccalaureate degree, nurses with a master's degree, and nurses with a doctoral degree. In this example, educational level is the:

Accepted Answer

Educational level is the independent variable because it is the factor being manipulated or categorized to observe its effect on the scores of the cultural competency exam, which is the dependent variable.

Question 15

A study examines the relationship between educational preparation and scores on a cultural competency exam. Subjects included are nurses with an associate's degree, nurses with a baccalaureate degree, nurses with a master's degree, and nurses with a doctoral degree. In this example, cultural competency is measured at what level?

Accepted Answer

The answer of A study examines the relationship between educational...

Question 16

In order for a variable to be at the interval level you know it must be:

Accepted Answer

The answer of In order for a variable to be...

Question 17

A survey asks your patient to identify his primary language. The choices are:
1) Spanish
2) English
3) Arabic
4) Other
You know this is an example of what type of variable?

Accepted Answer

Qualitative variables are non-numeric variables that describe a characteristic or attribute of a person or thing. In this case, the primary language is a qualitative variable because it describes a characteristic of the patient.

Question 18

You are reading a study that examines the impact of stress on ulcerative colitis. What is the independent variable?

Accepted Answer

The independent variable is the one that is manipulated or controlled in a study to observe its effect on the dependent variable. In this case, stress is the independent variable as it is being examined for its impact on ulcerative colitis.

Question 19

You are reading a study that examines the relationship between being over age 65 and prostate cancer. Age is measured as greater than or less than 65 years. The dependent variable is:

Accepted Answer

Prostate cancer is the dependent variable because it is the outcome being measured in the study.

Question 20

Your dependent variable is measured at the ratio level. You know this also means it must be:

Accepted Answer

A ratio level variable is quantitative because it involves numerical values that allow for meaningful comparisons and mathematical operations.

Quiz 1: Introduction to Statistics and Levels of Measurement