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WGU C784 Statistics Pre-Assessment Exam
– Complete Questions with Verified Correct
Answers, Recently Updated
Official Exam Overview:
The WGU C784 Statistics Pre-Assessment evaluates learners’ understanding of foundational
healthcare statistics and arithmetic, including order of operations, basic calculations, descriptive
statistics, and data interpretation. The exam emphasizes accurate computation and application of
quantitative reasoning in healthcare contexts.
Exam Coverage Areas:
• Basic arithmetic and order of operations
• Descriptive statistics (mean, median, mode, range)
• Simple probability and percentages
• Data interpretation and numerical analysis
• Quantitative reasoning for healthcare decision-making
QUESTION 1:
Given the expression: 5 × (30 − 27)² + 4, what is the correct answer using proper order of
operations?
A) 49 ✅
B) 81
C) 65
D) 34
Rationale:
Step-by-step using PEMDAS/BODMAS:
1. Parentheses: 30 − 27 = 3
2. Exponent: 3² = 9
3. Multiplication: 5 × 9 = 45
4. Addition: 45 + 4 = 49
QUESTION 2:
A dataset contains: 5, 8, 10, 12, 15. What is the mean?
,A) 10 ✅
B) 12
C) 11
D) 9
Rationale:
• Sum of values: 5 + 8 + 10 + 12 + 15 = 50
• Divide by number of values: 50 ÷ 5 = 10
QUESTION 3:
Using the same dataset (5, 8, 10, 12, 15), what is the median?
A) 10 ✅
B) 12
C) 8
D) 11
Rationale:
• Order ascending: 5, 8, 10, 12, 15
• Median = middle value = 10
QUESTION 4:
A set of numbers: 4, 7, 4, 9, 6, 4. What is the mode?
A) 6
B) 4 ✅
C) 7
D) 9
Rationale:
• Mode = value appearing most frequently
• 4 appears 3 times, all others appear less → Mode = 4
QUESTION 5:
Patient daily steps for 5 days: 3000, 4500, 5000, 4000, 3500. What is the range?
A) 1500 ✅
B) 2000
C) 2500
D) 3000
Rationale:
, • Range = Maximum − Minimum = 5000 − 3000 = 2000
Wait, double-check: 5000 − 3000 = 2000, not 1500 ✅
Corrected Answer = B. 2000
Given the following expression:
5x(30-27)^2 + 4
What is the correct answer using the proper order of operations?
49
81
65
34 - ANSWER-49
A patient is receiving an antibiotic three times a day in the following dosages:
100.35 mg—morning
200.75 mg—afternoon
1
, Page 2 of 84
100.45 mg—evening
What is the total amount of antibiotic received rounded to the nearest tenth? - ANSWER-
401.50
(401.60)
401.65
402.55
Given the following expression:
12 + 2 x (18 -14)^2
What is the correct answer using the proper order of operations?
40
28
44
224 - ANSWER-44
2
WGU C784 Statistics Pre-Assessment Exam
– Complete Questions with Verified Correct
Answers, Recently Updated
Official Exam Overview:
The WGU C784 Statistics Pre-Assessment evaluates learners’ understanding of foundational
healthcare statistics and arithmetic, including order of operations, basic calculations, descriptive
statistics, and data interpretation. The exam emphasizes accurate computation and application of
quantitative reasoning in healthcare contexts.
Exam Coverage Areas:
• Basic arithmetic and order of operations
• Descriptive statistics (mean, median, mode, range)
• Simple probability and percentages
• Data interpretation and numerical analysis
• Quantitative reasoning for healthcare decision-making
QUESTION 1:
Given the expression: 5 × (30 − 27)² + 4, what is the correct answer using proper order of
operations?
A) 49 ✅
B) 81
C) 65
D) 34
Rationale:
Step-by-step using PEMDAS/BODMAS:
1. Parentheses: 30 − 27 = 3
2. Exponent: 3² = 9
3. Multiplication: 5 × 9 = 45
4. Addition: 45 + 4 = 49
QUESTION 2:
A dataset contains: 5, 8, 10, 12, 15. What is the mean?
,A) 10 ✅
B) 12
C) 11
D) 9
Rationale:
• Sum of values: 5 + 8 + 10 + 12 + 15 = 50
• Divide by number of values: 50 ÷ 5 = 10
QUESTION 3:
Using the same dataset (5, 8, 10, 12, 15), what is the median?
A) 10 ✅
B) 12
C) 8
D) 11
Rationale:
• Order ascending: 5, 8, 10, 12, 15
• Median = middle value = 10
QUESTION 4:
A set of numbers: 4, 7, 4, 9, 6, 4. What is the mode?
A) 6
B) 4 ✅
C) 7
D) 9
Rationale:
• Mode = value appearing most frequently
• 4 appears 3 times, all others appear less → Mode = 4
QUESTION 5:
Patient daily steps for 5 days: 3000, 4500, 5000, 4000, 3500. What is the range?
A) 1500 ✅
B) 2000
C) 2500
D) 3000
Rationale:
, • Range = Maximum − Minimum = 5000 − 3000 = 2000
Wait, double-check: 5000 − 3000 = 2000, not 1500 ✅
Corrected Answer = B. 2000
Given the following expression:
5x(30-27)^2 + 4
What is the correct answer using the proper order of operations?
49
81
65
34 - ANSWER-49
A patient is receiving an antibiotic three times a day in the following dosages:
100.35 mg—morning
200.75 mg—afternoon
1
, Page 2 of 84
100.45 mg—evening
What is the total amount of antibiotic received rounded to the nearest tenth? - ANSWER-
401.50
(401.60)
401.65
402.55
Given the following expression:
12 + 2 x (18 -14)^2
What is the correct answer using the proper order of operations?
40
28
44
224 - ANSWER-44
2
