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WGU Applied-Probability-and-Statistics Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Basic Numeracy & Algebra | 15% | - Arithmetic operations, fractions, decimals, percentages - Linear equations, inequalities, graphing functions - Exponents, roots, and basic formulas |
| Descriptive Statistics | 25% | - Graphical displays: histograms, boxplots, scatterplots - Measures of center: mean, median, mode - Measures of spread: range, IQR, variance, standard deviation - Types of data: categorical, discrete, continuous |
| Probability Concepts | 20% | - Normal distribution and empirical rule - Probability rules, independent and dependent events - Discrete and continuous probability distributions - Conditional probability and Venn diagrams |
| Correlation & Regression | 20% | - Simple linear regression models - Interpreting slope, intercept, and R-squared - Predictions and limitations of regression - Correlation coefficient and interpretation |
| Inferential Statistics & Study Design | 20% | - Sampling methods and bias - Observational studies vs experiments - Confidence intervals for means/proportions - Hypothesis testing framework and interpretation |
WGU Applied Probability and Statistics (FZO1 C955) Sample Questions:
A university surveys faculty and students to determine support for a new campus recycling initiative.
The results of the survey are shown in the following 2 × 2 contingency table:
Which statement is true?
- A. Faculty members are slightly more likely than students to support the recycling initiative.
- B. Faculty members are slightly less likely than students to support the recycling initiative.
- C. Faculty members are much less likely than students to support the recycling initiative.
- D. Faculty members are much more likely than students to support the recycling initiative.
Correct Answer: D 🗳️
Explanation: Only visible for ValidExam members. You can sign-up / login (it's free).
Central limit theorem states:
- A. Population must be normal
- B. Sample mean ~ normal for large n
- C. Sample variance = population variance
- D. SE = 0
Correct Answer: B 🗳️
Explanation: Only visible for ValidExam members. You can sign-up / login (it's free).
Z-score formula = ?
- A. x/ #
- B. (x # # )/ #
- C. # / #
- D. (x + # )/ #
Correct Answer: B 🗳️
Explanation: Only visible for ValidExam members. You can sign-up / login (it's free).
Regression slope indicates:
- A. R²
- B. Change in Y per unit X
- C. Intercept
- D. Correlation
Correct Answer: B 🗳️
Explanation: Only visible for ValidExam members. You can sign-up / login (it's free).
A recording studio raises its use fee to $75 and charges $40 per hour for studio time. The equation of the total cost of a recording session as a function of studio time is y = 40x + 75.
Which graph represents this equation?
- A. Graph 1
- B. Graph 4
- C. Graph 3
- D. Graph 2
Correct Answer: B 🗳️
Explanation: Only visible for ValidExam members. You can sign-up / login (it's free).
