Statistics for Nursing Research Grove 4th Ed. Workbook Test
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Section 1: Levels of Measurement (15 Questions)
Q1: A nurse researcher records participants' blood types (A, B, AB, O) in a study
examining transfusion compatibility. What is the level of measurement for this variable?
A. Ordinal
B. Interval
C. Nominal [CORRECT]
D. Ratio
Correct Answer: C
Rationale: Blood type is a categorical variable with no inherent order or ranking;
categories are mutually exclusive and labels only, which defines nominal-level
measurement (Grove, 4th ed., Ch. 1).
Q2: In a cardiac study, patients are classified using the New York Heart Association
(NYHA) Functional Classification: Class I (no symptoms), Class II (slight limitation),
Class III (marked limitation), and Class IV (symptoms at rest). What level of
measurement does this represent?
A. Nominal
B. Interval
C. Ratio
D. Ordinal [CORRECT]
,Correct Answer: D
Rationale: NYHA classification represents rank-ordered categories with unequal
intervals between classes, which is the defining characteristic of ordinal-level
measurement (Grove, 4th ed., Ch. 1).
Q3: A researcher measures body temperature in degrees Celsius for patients
post-surgery. What level of measurement is this variable?
A. Nominal
B. Ordinal
C. Interval [CORRECT]
D. Ratio
Correct Answer: C
Rationale: Temperature in Celsius has equal intervals between values but lacks a true
zero point (0°C does not indicate absence of temperature), making it interval-level data
(Grove, 4th ed., Ch. 1).
Q4: A nurse researcher records the time (in minutes) it takes for patients to complete a
6-minute walk test. What level of measurement is this variable?
A. Nominal
B. Ordinal
C. Interval
D. Ratio [CORRECT]
Correct Answer: D
,Rationale: Time in minutes has equal intervals and a true zero point (0 minutes means
no time elapsed), allowing meaningful ratios (e.g., 10 minutes is twice 5 minutes), which
defines ratio-level measurement (Grove, 4th ed., Ch. 1).
Q5: A study uses a multi-item Likert scale (1 = Strongly Disagree to 5 = Strongly Agree)
to measure nurses' attitudes toward evidence-based practice. When treated as a total
score for parametric analysis, this variable is considered:
A. Nominal
B. Ordinal
C. Interval [CORRECT]
D. Ratio
Correct Answer: C
Rationale: Total scores from multi-item Likert scales are treated as interval-level data in
nursing research to allow parametric statistical analysis, as the summed scores
approximate equal intervals (Grove, 4th ed., Ch. 1).
Q6: A researcher records participants' marital status as single, married, divorced, or
widowed. Which statistical technique is most appropriate for analyzing this variable?
A. Mean and standard deviation
B. Frequency distribution and percentages [CORRECT]
C. Pearson correlation
D. Paired t-test
Correct Answer: B
Rationale: Nominal-level data such as marital status can only be analyzed using
non-parametric descriptive statistics like frequencies and percentages; means,
correlations, and t-tests require higher levels of measurement (Grove, 4th ed., Ch. 1).
, Q7: In a study of pediatric patients, the variable "current therapy" is coded as
chemotherapy, radiation, surgery, or combination therapy. This variable is measured at
the:
A. Ordinal level
B. Ratio level
C. Interval level
D. Nominal level [CORRECT]
Correct Answer: D
Rationale: Current therapy categories are mutually exclusive with no inherent order or
ranking, which is the defining characteristic of nominal-level measurement (Grove, 4th
ed., Ch. 1).
Q8: A researcher measures participants' BMI (kg/m²). Which statement about the level
of measurement is correct?
A. BMI is ordinal because it involves ranking
B. BMI is interval because it lacks a true zero
C. BMI is ratio because it has a true zero and equal intervals [CORRECT]
D. BMI is nominal because it is calculated from categories
Correct Answer: C
Rationale: BMI has equal intervals and a true zero point (0 kg/m² indicates absence of
body mass), making it ratio-level data; parametric statistics such as mean and standard
deviation are appropriate (Grove, 4th ed., Ch. 1).
Q9: A study categorizes annual household income as: <$25,000, $25,000-$49,999,
$50,000-$74,999, and ≥$75,000. What is the level of measurement?
Bank All Chapters Actual Exam 2026/2027 – Comprehensive
Guide with Detailed Rationales | 100% Verified | Pass
Guaranteed – A+ Graded
Section 1: Levels of Measurement (15 Questions)
Q1: A nurse researcher records participants' blood types (A, B, AB, O) in a study
examining transfusion compatibility. What is the level of measurement for this variable?
A. Ordinal
B. Interval
C. Nominal [CORRECT]
D. Ratio
Correct Answer: C
Rationale: Blood type is a categorical variable with no inherent order or ranking;
categories are mutually exclusive and labels only, which defines nominal-level
measurement (Grove, 4th ed., Ch. 1).
Q2: In a cardiac study, patients are classified using the New York Heart Association
(NYHA) Functional Classification: Class I (no symptoms), Class II (slight limitation),
Class III (marked limitation), and Class IV (symptoms at rest). What level of
measurement does this represent?
A. Nominal
B. Interval
C. Ratio
D. Ordinal [CORRECT]
,Correct Answer: D
Rationale: NYHA classification represents rank-ordered categories with unequal
intervals between classes, which is the defining characteristic of ordinal-level
measurement (Grove, 4th ed., Ch. 1).
Q3: A researcher measures body temperature in degrees Celsius for patients
post-surgery. What level of measurement is this variable?
A. Nominal
B. Ordinal
C. Interval [CORRECT]
D. Ratio
Correct Answer: C
Rationale: Temperature in Celsius has equal intervals between values but lacks a true
zero point (0°C does not indicate absence of temperature), making it interval-level data
(Grove, 4th ed., Ch. 1).
Q4: A nurse researcher records the time (in minutes) it takes for patients to complete a
6-minute walk test. What level of measurement is this variable?
A. Nominal
B. Ordinal
C. Interval
D. Ratio [CORRECT]
Correct Answer: D
,Rationale: Time in minutes has equal intervals and a true zero point (0 minutes means
no time elapsed), allowing meaningful ratios (e.g., 10 minutes is twice 5 minutes), which
defines ratio-level measurement (Grove, 4th ed., Ch. 1).
Q5: A study uses a multi-item Likert scale (1 = Strongly Disagree to 5 = Strongly Agree)
to measure nurses' attitudes toward evidence-based practice. When treated as a total
score for parametric analysis, this variable is considered:
A. Nominal
B. Ordinal
C. Interval [CORRECT]
D. Ratio
Correct Answer: C
Rationale: Total scores from multi-item Likert scales are treated as interval-level data in
nursing research to allow parametric statistical analysis, as the summed scores
approximate equal intervals (Grove, 4th ed., Ch. 1).
Q6: A researcher records participants' marital status as single, married, divorced, or
widowed. Which statistical technique is most appropriate for analyzing this variable?
A. Mean and standard deviation
B. Frequency distribution and percentages [CORRECT]
C. Pearson correlation
D. Paired t-test
Correct Answer: B
Rationale: Nominal-level data such as marital status can only be analyzed using
non-parametric descriptive statistics like frequencies and percentages; means,
correlations, and t-tests require higher levels of measurement (Grove, 4th ed., Ch. 1).
, Q7: In a study of pediatric patients, the variable "current therapy" is coded as
chemotherapy, radiation, surgery, or combination therapy. This variable is measured at
the:
A. Ordinal level
B. Ratio level
C. Interval level
D. Nominal level [CORRECT]
Correct Answer: D
Rationale: Current therapy categories are mutually exclusive with no inherent order or
ranking, which is the defining characteristic of nominal-level measurement (Grove, 4th
ed., Ch. 1).
Q8: A researcher measures participants' BMI (kg/m²). Which statement about the level
of measurement is correct?
A. BMI is ordinal because it involves ranking
B. BMI is interval because it lacks a true zero
C. BMI is ratio because it has a true zero and equal intervals [CORRECT]
D. BMI is nominal because it is calculated from categories
Correct Answer: C
Rationale: BMI has equal intervals and a true zero point (0 kg/m² indicates absence of
body mass), making it ratio-level data; parametric statistics such as mean and standard
deviation are appropriate (Grove, 4th ed., Ch. 1).
Q9: A study categorizes annual household income as: <$25,000, $25,000-$49,999,
$50,000-$74,999, and ≥$75,000. What is the level of measurement?
