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WGU Applied-Probability-and-Statistics Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Descriptive Statistics | 25% | - Measures of center: mean, median, mode - Types of data: categorical, discrete, continuous - Graphical displays: histograms, boxplots, scatterplots - Measures of spread: range, IQR, variance, standard deviation |
| Basic Numeracy & Algebra | 15% | - Arithmetic operations, fractions, decimals, percentages - Exponents, roots, and basic formulas - Linear equations, inequalities, graphing functions |
| Probability Concepts | 20% | - Probability rules, independent and dependent events - Discrete and continuous probability distributions - Normal distribution and empirical rule - Conditional probability and Venn diagrams |
| Correlation & Regression | 20% | - Correlation coefficient and interpretation - Interpreting slope, intercept, and R-squared - Predictions and limitations of regression - Simple linear regression models |
| Inferential Statistics & Study Design | 20% | - Observational studies vs experiments - Confidence intervals for means/proportions - Sampling methods and bias - Hypothesis testing framework and interpretation |
WGU Applied Probability and Statistics (FZO1 C955) Sample Questions:
1. Conditional probability formula:
A) P(A)/P(B)
B) P(B)/P(A)
C) P(A)×P(B)
D) P(A|B) = P(A and B)/P(B)
2. P(A) = 0.3, P(B) = 0.4, A and B independent. P(A and B) = ?
A) 0.12
B) 0.3
C) 0.7
D) 0.1
3. A class of 25 students includes 10 who play soccer, 8 who play basketball, and 7 who play neither sport.
What is the probability of randomly selecting a student who does not play soccer?
A) .30
B) .40
C) .50
D) .60
4. Probability of rolling sum = 2 on 2 dice = ?
A) 1/12
B) 1/6
C) 1/36
D) 2/36
5. Variance of Poisson # = 5 = ?
A) 0
B) 4
C) 1
D) 5
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: A | Question # 3 Answer: D | Question # 4 Answer: C | Question # 5 Answer: D |
