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WGU Applied-Probability-and-Statistics Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Basic Numeracy & Algebra | 15% | - Arithmetic operations, fractions, decimals, percentages - Linear equations, inequalities, graphing functions - Exponents, roots, and basic formulas |
| Topic 2: Descriptive Statistics | 25% | - Measures of center: mean, median, mode - Graphical displays: histograms, boxplots, scatterplots - Types of data: categorical, discrete, continuous - Measures of spread: range, IQR, variance, standard deviation |
| Topic 3: Correlation & Regression | 20% | - Simple linear regression models - Predictions and limitations of regression - Interpreting slope, intercept, and R-squared - Correlation coefficient and interpretation |
| Topic 4: Probability Concepts | 20% | - Conditional probability and Venn diagrams - Discrete and continuous probability distributions - Probability rules, independent and dependent events - Normal distribution and empirical rule |
| Topic 5: Inferential Statistics & Study Design | 20% | - Observational studies vs experiments - Hypothesis testing framework and interpretation - Confidence intervals for means/proportions - Sampling methods and bias |
WGU Applied Probability and Statistics (FZO1 C955) Sample Questions:
1. A standard deck of 52 playing cards, 13 with hearts, 13 with diamonds, 13 with clovers, and 13 with spades, is shuffled, and one card is drawn at random.
What is the probability of drawing a heart?
A) 1/13
B) 1/4
C) 1/3
D) 1/2
2. Probability of rolling sum = 12 = ?
A) 2/36
B) 1/6
C) 1/12
D) 1/36
3. 95% confidence interval for mean = (45, 55). Which statement is correct?
A) Population mean is 95% likely within interval
B) Interval is fixed probability
C) Population mean always 55
D) Mean is 50
4. Standard deviation measures:
A) Count
B) Probability
C) Spread of data
D) Central tendency
5. Probability of exactly 1 head in 2 coin flips = ?
A) 1/4
B) 1/2
C) 1
D) 3/4
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: D | Question # 3 Answer: A | Question # 4 Answer: C | Question # 5 Answer: B |
