WGU C784 Applied Healthcare Statistics Objective Assessment (OA) Actual Exam 2026_2027.

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WGU C784 Applied Healthcare Statistics Objective Assessment (OA) Actual Exam 2026_2027.

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This comprehensive test bank contains 150 practice questions with well-elaborated answers and detailed rationales for the WGU C784 Applied Healthcare Statistics Objective Assessment. Covering all key concepts, this resource includes basic math and algebra review (fractions, percentages, ratios, proportions, dosage calculations, unit conversions), data types and measurement (nominal, ordinal, interval, ratio data, continuous vs discrete, qualitative vs quantitative), descriptive statistics (mean, median, mode, range, variance, standard deviation, z-scores, normal distribution, empirical rule, skewness, box plots, five-number summary), graphs and visualizations (bar charts, histograms, scatter plots, pie charts, line graphs, stem-and-leaf plots, correlation interpretation), probability (basic probability rules, independent and mutually exclusive events, conditional probability, probability distributions), sampling and study design (population vs sample, random sampling methods, bias, experimental vs observational studies, cohort, case-control, cross-sectional designs, confounding variables), and inferential statistics (confidence intervals, hypothesis testing, p-values, Type I and Type II errors, t-tests, ANOVA, chi-square tests, correlation). Essential for healthcare students and professionals seeking to master applied statistics.

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WGU C784 Applied Healthcare Statistics
Objective Assessment (OA) Actual Exam
2026/2027
Complete 150-Question Test Bank with Well-Elaborated Answers & Rationales
100% Correct Verified Answers | Latest Updated Version | Guaranteed Success A+

Instructions

This comprehensive test bank contains 150 practice questions covering all key concepts for the
WGU C784 Applied Healthcare Statistics Objective Assessment. Questions are organized by
topic area and include verified correct answers with detailed rationales based on course
materials .

SECTION 1: BASIC MATH & ALGEBRA REVIEW (Questions 1-25)

Question 1
Which of the following is a prime number?

A) 1
B) 4
C) 7
D) 9

Correct Answer: C

Rationale: A prime number is a whole number greater than 1 that has only two factors: 1 and
itself. 7 has only factors 1 and 7. 1 is neither prime nor composite. 4 has factors 1, 2, 4. 9 has
factors 1, 3, 9 .

Question 2
What is the greatest common factor (GCF) of 12 and 18?

A) 2

,B) 3
C) 6
D) 36

Correct Answer: C

Rationale: Factors of 12: 1, 2, 3, 4, 6, 12. Factors of 18: 1, 2, 3, 6, 9, 18. The greatest common
factor is 6 .

Question 3
What is the least common multiple (LCM) of 4 and 6?

A) 2
B) 8
C) 12
D) 24

Correct Answer: C

Rationale: Multiples of 4: 4, 8, 12, 16, 20, 24. Multiples of 6: 6, 12, 18, 24. The least common
multiple is 12 .

Question 4
Simplify: 3(2x + 4) - 2(x - 3)

A) 4x + 6
B) 4x + 18
C) 8x + 6
D) 8x + 18

Correct Answer: B

Rationale: 3(2x + 4) - 2(x - 3) = 6x + 12 - 2x + 6 = 4x + 18 .

Question 5
Solve for x: 2x - 7 = 15

A) 4

,B) 8
C) 11
D) 22

Correct Answer: C

Rationale: 2x - 7 = 15 → 2x = 22 → x = 11 .

Question 6
Solve for x: 3x + 5 = 2x - 8

A) -13
B) -3
C) 3
D) 13

Correct Answer: A

Rationale: 3x + 5 = 2x - 8 → 3x - 2x = -8 - 5 → x = -13 .

Question 7
What is the value of 2³?

A) 4
B) 6
C) 8
D) 16

Correct Answer: C

Rationale: 2³ = 2 × 2 × 2 = 8 .

Question 8
What is the value of √64?

A) 2
B) 4
C) 8

, D) 16

Correct Answer: C

Rationale: √64 = 8 because 8 × 8 = 64 .

Question 9
Simplify: 2/3 + 3/4

A) 5/7
B) 5/12
C) 17/12
D) 1 5/12

Correct Answer: C

Rationale: 2/3 + 3/4 = (8/12) + (9/12) = 17/12 .

Question 10
Simplify: 3/4 × 2/3

A) 1/4
B) 1/2
C) 6/12
D) 1

Correct Answer: B

Rationale: 3/4 × 2/3 = 6/12 = 1/2 .

Question 11
What is 0.25 as a fraction in simplest form?

A) 1/4
B) 25/100
C) 1/25
D) 25/10

Document information

Uploaded on: July 28, 2026
Number of pages: 52
Written in: 2025/2026
Type: Exam (elaborations)
Contains: Questions & answers

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