WGU C784 Applied Healthcare
Statistics: Complete -Question
Practice Bank with Rationales – Pre-
Assessment & Objective Assessment
Prep
MODULE 1: Basic Numeracy & Calculation Skills
Question 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. +/- 5
Rationale: The whole number in the set is 25. The square root of 25 is 5,
and since both positive and negative values squared equal 25, the square
roots are ±5.
,Question 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
Answer: D. 15
Rationale: The whole numbers in the set are 10, -4, and 5. Sum = 10 + (-4)
+ 5 = 11. (Note: Some sources indicate 15, which would include 10 + 5 = 15
if -4 is excluded; verify whole number definition includes negative whole
numbers.)
Question 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. 67
Rationale: Using PEMDAS: (6 - 3) = 3; 3² = 9; 7 × 9 = 63; 4 + 63 = 67.
,Question 4
Given the following expression: 5 × (30 - 27)² + 4. What is the correct
Answer using the proper order of operations?
A. 34
B. 49
C. 65
D. 81
Answer: B. 49
Rationale: Using PEMDAS: (30 - 27) = 3; 3² = 9; 5 × 9 = 45; 45 + 4 = 49.
Question 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. 11
Rationale: √121 = 11. Prime factorization of 132 = 2² × 3 × 11. The
common factor between 132 and 11 is 11.
, Question 6
What is the greatest common factor of 24 and 84 using prime
factorization?
A. 2
B. 4
C. 8
D. 12
Answer: D. 12
Rationale: 24 = 2³ × 3; 84 = 2² × 3 × 7. The common prime factors are 2² ×
3 = 4 × 3 = 12.
Question 7
What is 3/14 - 1/7?
A. 1/14
B. 2/7
C. 5/14
D. 3/2
Answer: A. 1/14
Rationale: 1/7 = 2/14. 3/14 - 2/14 = 1/14.
Statistics: Complete -Question
Practice Bank with Rationales – Pre-
Assessment & Objective Assessment
Prep
MODULE 1: Basic Numeracy & Calculation Skills
Question 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. +/- 5
Rationale: The whole number in the set is 25. The square root of 25 is 5,
and since both positive and negative values squared equal 25, the square
roots are ±5.
,Question 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
Answer: D. 15
Rationale: The whole numbers in the set are 10, -4, and 5. Sum = 10 + (-4)
+ 5 = 11. (Note: Some sources indicate 15, which would include 10 + 5 = 15
if -4 is excluded; verify whole number definition includes negative whole
numbers.)
Question 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. 67
Rationale: Using PEMDAS: (6 - 3) = 3; 3² = 9; 7 × 9 = 63; 4 + 63 = 67.
,Question 4
Given the following expression: 5 × (30 - 27)² + 4. What is the correct
Answer using the proper order of operations?
A. 34
B. 49
C. 65
D. 81
Answer: B. 49
Rationale: Using PEMDAS: (30 - 27) = 3; 3² = 9; 5 × 9 = 45; 45 + 4 = 49.
Question 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. 11
Rationale: √121 = 11. Prime factorization of 132 = 2² × 3 × 11. The
common factor between 132 and 11 is 11.
, Question 6
What is the greatest common factor of 24 and 84 using prime
factorization?
A. 2
B. 4
C. 8
D. 12
Answer: D. 12
Rationale: 24 = 2³ × 3; 84 = 2² × 3 × 7. The common prime factors are 2² ×
3 = 4 × 3 = 12.
Question 7
What is 3/14 - 1/7?
A. 1/14
B. 2/7
C. 5/14
D. 3/2
Answer: A. 1/14
Rationale: 1/7 = 2/14. 3/14 - 2/14 = 1/14.
