WGU C723 FORMULAS & FIGURES-EXAM
CORRECT QUESTIONS AND ANSWERS 2026
UPDATED
FORMULAS & FIGURES
This Note lists the formulas you should know for the C723 PA and OA. It also includes a diagram
illustrating the Linear Programming Output Report introduced in Unit 6. You cannot use this card on the
Objective Assessment but you can use a WGU Approved Calculator and a whiteboard.
Descriptive Statistics (Unit 3)
DESCRIPTIVE STATISTICS (page 25)
AVERAGE (MEAN) = the SUM of all Observations Xi divided by the number of observations
𝑆𝑈𝑀(𝑋1, 𝑋2, 𝑋3, … , 𝑋𝑛)
= where n = number of observations
𝑛
MODE = the most frequently observed value of X
MEDIAN = in a sorted sample, X with an equal number of observations above
and below X. If there are an even number of observations, Median is
the average of the middle two observations.
NOTE: Calculating Standard Deviations will not be required on the PA or OA
Expected Value (Unit 4)
EXPECTED VALUE (EV) (page 39)
EXPECTED VALUE = a weighted average of all possible outcomes with the weights being
their probability of occurring
= the SUM of all possible outcomes multiplied by their probability
occurrence
EV = P1*V1 + P2*V2 + P3*V3 + … Pn*Vn
where Pi = Probability of Outcome i
Vi = Value of Outcome i
n = the number of possible Outcomes
Network Analysis (Project Management) (Unit 5)
CALCULATE TIME DURATION ESTIMATES (pages 12 and 49)
CORRECT QUESTIONS AND ANSWERS 2026
UPDATED
FORMULAS & FIGURES
This Note lists the formulas you should know for the C723 PA and OA. It also includes a diagram
illustrating the Linear Programming Output Report introduced in Unit 6. You cannot use this card on the
Objective Assessment but you can use a WGU Approved Calculator and a whiteboard.
Descriptive Statistics (Unit 3)
DESCRIPTIVE STATISTICS (page 25)
AVERAGE (MEAN) = the SUM of all Observations Xi divided by the number of observations
𝑆𝑈𝑀(𝑋1, 𝑋2, 𝑋3, … , 𝑋𝑛)
= where n = number of observations
𝑛
MODE = the most frequently observed value of X
MEDIAN = in a sorted sample, X with an equal number of observations above
and below X. If there are an even number of observations, Median is
the average of the middle two observations.
NOTE: Calculating Standard Deviations will not be required on the PA or OA
Expected Value (Unit 4)
EXPECTED VALUE (EV) (page 39)
EXPECTED VALUE = a weighted average of all possible outcomes with the weights being
their probability of occurring
= the SUM of all possible outcomes multiplied by their probability
occurrence
EV = P1*V1 + P2*V2 + P3*V3 + … Pn*Vn
where Pi = Probability of Outcome i
Vi = Value of Outcome i
n = the number of possible Outcomes
Network Analysis (Project Management) (Unit 5)
CALCULATE TIME DURATION ESTIMATES (pages 12 and 49)
