Western Governors University
LANIF • 559C
★ ★
W College of IT — Applied Probability & Statistics
A NEW KIND OF U
EST. 1997
C955 — Applied Probability and Statistics
CO M P R E H E N S I V E A SS E SS M E N T: D ATA TY P E S , N U M B E R P R O P E RT I E S , A LG E B R A & M E A S U R E M E N T
INSTITUTION Western Governors University COURSE CODE C955
PROGRAM BS Computer Science / BS Data ACADEMIC YEAR
Management
EXAM TITLE Applied Probability and Statistics — TOTAL QUESTIONS 50 Questions
Comprehensive
CONTENT AREAS Data Types, Number Systems, Fractions, FORMAT Multiple Choice — Select the Single Best
Algebra, Measurement Answer
EXAMINATION INSTRUCTIONS
▸ Select the single best answer for each multiple-choice question.
▸ This comprehensive C955 examination covers: discrete vs. continuous data, number properties and classifications, fractions and
rational numbers, prime/composite numbers, algebraic expressions, polynomials, temperature conversion, and measurement
concepts.
▸ Correct answers and WGU C955 curriculum rationales appear below each question.
▸ All content is aligned with the WGU C955 Applied Probability and Statistics course competencies.
DATA TYPES, NUMBER SYSTEMS, ALGEBRA & MATHEMATICAL Questions 1 –
FOUNDATIONS 50
1. Discrete data is characterized by:
A. Values within a range, measured not counted, connected lines or curves
B. Distinct values that can be counted, represented by unconnected points
C. Only decimal values
D. Only negative numbers
CORRECT ANSWER B — Distinct values that can be counted, represented by unconnected points
WGU C955 RATIONALE Discrete data has distinct, countable values with unconnected points (dots). An example is days of
the week. Continuous data (A) has values within a range, is measured (not counted), and has no
gaps between data points (connected lines/curves).
, 2. Which of the following is an example of discrete data?
A. A person's height in centimeters
B. Days of the week
C. Temperature over time
D. Speed of a car
CORRECT ANSWER B — Days of the week
WGU C955 RATIONALE Days of the week are countable, distinct values (Monday, Tuesday, etc.)—discrete. Height (A),
temperature (C), and speed (D) are all continuous—measured on a continuum with infinite
possible values within a range.
3. An expression is defined as:
A. Only a single number
B. A group of symbols such as numbers and operators that has mathematical validity
C. An equation with an equals sign
D. A comparison of two numbers
CORRECT ANSWER B — A group of symbols such as numbers and operators with mathematical validity
WGU C955 RATIONALE An expression combines numbers, variables, and operators (+, −, ×, ÷) in a mathematically valid
way. It does NOT require an equals sign—that would be an equation (C). A comparison (D) is a ratio
or proportion.
4. The commutative property states that:
A. Adding 0 to any number does not change the original number
B. The order in which numbers appear in a sum can be reversed
C. Multiplying by 1 preserves the original value
D. Every number has an opposite on the number line
CORRECT ANSWER B — The order in which numbers appear in a sum can be reversed
WGU C955 RATIONALE Commutative property: a + b = b + a (order doesn't matter). Option A = identity property of
addition. Option C = identity property of multiplication. Option D describes additive inverses.
5. The identity property of addition states:
A. The order of addends can be reversed
B. Adding 0 to any number does not change the original number
C. Multiplying by 1 preserves the original value
D. Every number has an opposite
CORRECT ANSWER B — Adding 0 to any number does not change the original number
WGU C955 RATIONALE Identity property of addition: n + 0 = n. Option A = commutative. Option C = identity property of
multiplication. Option D = additive inverse.
LANIF • 559C
★ ★
W College of IT — Applied Probability & Statistics
A NEW KIND OF U
EST. 1997
C955 — Applied Probability and Statistics
CO M P R E H E N S I V E A SS E SS M E N T: D ATA TY P E S , N U M B E R P R O P E RT I E S , A LG E B R A & M E A S U R E M E N T
INSTITUTION Western Governors University COURSE CODE C955
PROGRAM BS Computer Science / BS Data ACADEMIC YEAR
Management
EXAM TITLE Applied Probability and Statistics — TOTAL QUESTIONS 50 Questions
Comprehensive
CONTENT AREAS Data Types, Number Systems, Fractions, FORMAT Multiple Choice — Select the Single Best
Algebra, Measurement Answer
EXAMINATION INSTRUCTIONS
▸ Select the single best answer for each multiple-choice question.
▸ This comprehensive C955 examination covers: discrete vs. continuous data, number properties and classifications, fractions and
rational numbers, prime/composite numbers, algebraic expressions, polynomials, temperature conversion, and measurement
concepts.
▸ Correct answers and WGU C955 curriculum rationales appear below each question.
▸ All content is aligned with the WGU C955 Applied Probability and Statistics course competencies.
DATA TYPES, NUMBER SYSTEMS, ALGEBRA & MATHEMATICAL Questions 1 –
FOUNDATIONS 50
1. Discrete data is characterized by:
A. Values within a range, measured not counted, connected lines or curves
B. Distinct values that can be counted, represented by unconnected points
C. Only decimal values
D. Only negative numbers
CORRECT ANSWER B — Distinct values that can be counted, represented by unconnected points
WGU C955 RATIONALE Discrete data has distinct, countable values with unconnected points (dots). An example is days of
the week. Continuous data (A) has values within a range, is measured (not counted), and has no
gaps between data points (connected lines/curves).
, 2. Which of the following is an example of discrete data?
A. A person's height in centimeters
B. Days of the week
C. Temperature over time
D. Speed of a car
CORRECT ANSWER B — Days of the week
WGU C955 RATIONALE Days of the week are countable, distinct values (Monday, Tuesday, etc.)—discrete. Height (A),
temperature (C), and speed (D) are all continuous—measured on a continuum with infinite
possible values within a range.
3. An expression is defined as:
A. Only a single number
B. A group of symbols such as numbers and operators that has mathematical validity
C. An equation with an equals sign
D. A comparison of two numbers
CORRECT ANSWER B — A group of symbols such as numbers and operators with mathematical validity
WGU C955 RATIONALE An expression combines numbers, variables, and operators (+, −, ×, ÷) in a mathematically valid
way. It does NOT require an equals sign—that would be an equation (C). A comparison (D) is a ratio
or proportion.
4. The commutative property states that:
A. Adding 0 to any number does not change the original number
B. The order in which numbers appear in a sum can be reversed
C. Multiplying by 1 preserves the original value
D. Every number has an opposite on the number line
CORRECT ANSWER B — The order in which numbers appear in a sum can be reversed
WGU C955 RATIONALE Commutative property: a + b = b + a (order doesn't matter). Option A = identity property of
addition. Option C = identity property of multiplication. Option D describes additive inverses.
5. The identity property of addition states:
A. The order of addends can be reversed
B. Adding 0 to any number does not change the original number
C. Multiplying by 1 preserves the original value
D. Every number has an opposite
CORRECT ANSWER B — Adding 0 to any number does not change the original number
WGU C955 RATIONALE Identity property of addition: n + 0 = n. Option A = commutative. Option C = identity property of
multiplication. Option D = additive inverse.
