WGU C955 Probability and Statistics Practice Exam (2026–2027)

WGU C955 PROBABILITY AND
STATISTICS OBJECTIVE ASSESSMENT
EXAM EDITION 2026 -2027 WITH
QUESTIONS AND CORRECT DETAILED
ANSWERS RANKED A+

WGU C955 Probability and Statistics Practice Exam (2026–2027)


Questions 1–50: Descriptive Statistics




1. What is the mean of 4, 6, 8, 10, 12?


A. 6

B. 8

C. 10

D. 12


Answer: B




2. What is the median of 2, 5, 7, 9, 12?


A. 5

B. 6

C. 7

D. 9

,Answer: C




3. What is the mode of 3, 4, 4, 5, 6?


A. 3

B. 4

C. 5

D. 6


Answer: B




4. Range is calculated as:


A. Mean − Median

B. Highest − Lowest

C. Sum ÷ Number of Values

D. Median − Mode


Answer: B




5. Which measure is most affected by extreme values?


A. Median

B. Mode

C. Mean

D. Range

, Answer: C




6. A distribution that is perfectly balanced around its center is:


A. Skewed left

B. Skewed right

C. Symmetrical

D. Bimodal


Answer: C




7. The middle value in an ordered data set is the:


A. Mean

B. Mode

C. Median

D. Range


Answer: C




8. What is the mean of 5, 10, 15?


A. 8

B. 10

C. 12

D. 15