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WGU Applied-Probability-and-Statistics Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Probability Concepts | 20% | - Normal distribution and empirical rule - Discrete and continuous probability distributions - Probability rules, independent and dependent events - Conditional probability and Venn diagrams |
| Correlation & Regression | 20% | - Correlation coefficient and interpretation - Predictions and limitations of regression - Interpreting slope, intercept, and R-squared - Simple linear regression models |
| Inferential Statistics & Study Design | 20% | - Hypothesis testing framework and interpretation - Confidence intervals for means/proportions - Sampling methods and bias - Observational studies vs experiments |
| Descriptive Statistics | 25% | - Measures of center: mean, median, mode - Types of data: categorical, discrete, continuous - Measures of spread: range, IQR, variance, standard deviation - Graphical displays: histograms, boxplots, scatterplots |
| Basic Numeracy & Algebra | 15% | - Exponents, roots, and basic formulas - Linear equations, inequalities, graphing functions - Arithmetic operations, fractions, decimals, percentages |
WGU Applied Probability and Statistics (FZO1 C955) Sample Questions:
A city council surveys residents and business owners about a proposed new public transportation system. The results of the survey are shown in the following 2 × 2 contingency table.
Which statement is true?
- A. A resident is slightly more likely than a business owner to favor the new transportation system.
- B. A resident is slightly less likely than a business owner to favor the new transportation system.
- C. A resident is much more likely than a business owner to favor the new transportation system.
- D. A resident is much less likely than a business owner to favor the new transportation system.
Correct Answer: C 🗳️
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Empirical probability = ?
- A. Theoretical
- B. Guess
- C. Based on observed data
- D. Uniform
Correct Answer: C 🗳️
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A home inspector finds 3% of the homes in a community infected with termites.
How should the home inspector's findings be interpreted?
- A. It is likely that a home in the community is infected with termites.
- B. It is impossible that a home in the community is infected with termites.
- C. It is as likely as unlikely that a home in the community is infected with termites.
- D. It is unlikely that a home in the community is infected with termites.
Correct Answer: D 🗳️
Explanation: Only visible for ActualCollection members. You can sign-up / login (it's free).
Best chart for categorical data?
- A. Bar chart
- B. Histogram
- C. Boxplot
- D. Scatterplot
Correct Answer: A 🗳️
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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 3
- B. Graph 2
- C. Graph 1
- D. Graph 4
Correct Answer: D 🗳️
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