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WGU C784 APPLIED HEALTHCARE STATISTICS
COMPREHENSIVE PRE-ASSESSMENT EXAM
2026-2027 LATEST VERSION WITH 300
QUESTIONS AND CORRECT RATIONALIZED
SOLUTIONS JUST RELEASED THIS YEAR
WGU C784 APPLIED HEALTHCARE STATISTICS – COMPREHENSIVE PRE-ASSESSMENT PRACTICE
BANK
Exam Coverage Summary: WGU C784 Applied Healthcare Statistics is designed to develop
competence in fundamental mathematics, introductory algebra, and statistics and probability
concepts. The exam covers:
• Basic Mathematics & Algebra: Whole numbers, integers, rational/real numbers, order of
operations, fractions, decimals, percentages, ratios, proportions, solving linear equations
• Descriptive Statistics: Measures of central tendency (mean, median, mode), measures
of variability (range, standard deviation, variance), data visualization
• Probability: Basic probability rules, conditional probability, independent events,
probability distributions
• Inferential Statistics: Sampling methods, hypothesis testing, confidence intervals,
statistical significance
• Healthcare Applications: Dosage calculations, unit conversions, medical statistics
interpretation, evidence-based practice
The following 300 practice questions reflect the format and content of the WGU C784 Pre-
Assessment and Objective Assessment exams.
SECTION 1: NUMBER SYSTEMS AND BASIC OPERATIONS (Questions 1–60)
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1. Given the following set of numbers: 3.3, -2.3, -16, 25. What are the square roots of the whole
number?
A) ± 2.3
B) ± 3.3
C) ± 4
D) ± 5
Answer: D The whole number in the set is 25. The square root of 25 is ±5. The square root of a
positive number has both a positive and negative root. -16 is not a whole number (it's an
integer), and 3.3 and -2.3 are decimals. ±5 is the correct answer.
2. Given the following set of numbers: 10, 2.5, -4, -4.5, 5. What is the sum when adding
together only the whole numbers?
A) 5.5
B) 11
C) 12.5
D) 15
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Answer: D The whole numbers in the set are 10 and 5 (whole numbers are positive numbers
including zero, without fractions or decimals). -4 is an integer but negative, so it is not a whole
number. 2.5 and -4.5 are decimals. Sum = 10 + 5 = 15.
3. Given the following expression: 4 + 7 × (6 - 3)². What is the answer using proper order of
operations?
A) 25
B) 46
C) 67
D) 99
Answer: C Step 1: Parentheses: (6 - 3) = 3. Step 2: Exponent: 3² = 9. Step 3: Multiplication: 7 × 9 =
63. Step 4: Addition: 4 + 63 = 67.
4. Given the following expression: 5 × (30 - 27)² + 4. What is the correct answer using proper
order of operations?
A) 34
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B) 49
C) 65
D) 81
Answer: B Step 1: Parentheses: (30 - 27) = 3. Step 2: Exponent: 3² = 9. Step 3: Multiplication: 5 ×
9 = 45. Step 4: Addition: 45 + 4 = 49.
5. What is the greatest common factor of 132 and the square root of 121 using prime
factorization?
A) 1
B) 2
C) 10
D) 11
Answer: D Square root of 121 is 11. Prime factorization of 132 = 2² × 3 × 11. Prime factorization
of 11 = 11. The common factor is 11.
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SUCCESS!
WGU C784 APPLIED HEALTHCARE STATISTICS
COMPREHENSIVE PRE-ASSESSMENT EXAM
2026-2027 LATEST VERSION WITH 300
QUESTIONS AND CORRECT RATIONALIZED
SOLUTIONS JUST RELEASED THIS YEAR
WGU C784 APPLIED HEALTHCARE STATISTICS – COMPREHENSIVE PRE-ASSESSMENT PRACTICE
BANK
Exam Coverage Summary: WGU C784 Applied Healthcare Statistics is designed to develop
competence in fundamental mathematics, introductory algebra, and statistics and probability
concepts. The exam covers:
• Basic Mathematics & Algebra: Whole numbers, integers, rational/real numbers, order of
operations, fractions, decimals, percentages, ratios, proportions, solving linear equations
• Descriptive Statistics: Measures of central tendency (mean, median, mode), measures
of variability (range, standard deviation, variance), data visualization
• Probability: Basic probability rules, conditional probability, independent events,
probability distributions
• Inferential Statistics: Sampling methods, hypothesis testing, confidence intervals,
statistical significance
• Healthcare Applications: Dosage calculations, unit conversions, medical statistics
interpretation, evidence-based practice
The following 300 practice questions reflect the format and content of the WGU C784 Pre-
Assessment and Objective Assessment exams.
SECTION 1: NUMBER SYSTEMS AND BASIC OPERATIONS (Questions 1–60)
1
SUCCESS!
,Page 2 of 152
1. Given the following set of numbers: 3.3, -2.3, -16, 25. What are the square roots of the whole
number?
A) ± 2.3
B) ± 3.3
C) ± 4
D) ± 5
Answer: D The whole number in the set is 25. The square root of 25 is ±5. The square root of a
positive number has both a positive and negative root. -16 is not a whole number (it's an
integer), and 3.3 and -2.3 are decimals. ±5 is the correct answer.
2. Given the following set of numbers: 10, 2.5, -4, -4.5, 5. What is the sum when adding
together only the whole numbers?
A) 5.5
B) 11
C) 12.5
D) 15
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Answer: D The whole numbers in the set are 10 and 5 (whole numbers are positive numbers
including zero, without fractions or decimals). -4 is an integer but negative, so it is not a whole
number. 2.5 and -4.5 are decimals. Sum = 10 + 5 = 15.
3. Given the following expression: 4 + 7 × (6 - 3)². What is the answer using proper order of
operations?
A) 25
B) 46
C) 67
D) 99
Answer: C Step 1: Parentheses: (6 - 3) = 3. Step 2: Exponent: 3² = 9. Step 3: Multiplication: 7 × 9 =
63. Step 4: Addition: 4 + 63 = 67.
4. Given the following expression: 5 × (30 - 27)² + 4. What is the correct answer using proper
order of operations?
A) 34
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B) 49
C) 65
D) 81
Answer: B Step 1: Parentheses: (30 - 27) = 3. Step 2: Exponent: 3² = 9. Step 3: Multiplication: 5 ×
9 = 45. Step 4: Addition: 45 + 4 = 49.
5. What is the greatest common factor of 132 and the square root of 121 using prime
factorization?
A) 1
B) 2
C) 10
D) 11
Answer: D Square root of 121 is 11. Prime factorization of 132 = 2² × 3 × 11. Prime factorization
of 11 = 11. The common factor is 11.
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