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WGU Applied-Probability-and-Statistics Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Basic Numeracy & Algebra | 15% | - Arithmetic operations, fractions, decimals, percentages - Exponents, roots, and basic formulas - Linear equations, inequalities, graphing functions |
| Correlation & Regression | 20% | - Predictions and limitations of regression - Correlation coefficient and interpretation - Interpreting slope, intercept, and R-squared - Simple linear regression models |
| Probability Concepts | 20% | - Discrete and continuous probability distributions - Probability rules, independent and dependent events - Conditional probability and Venn diagrams - Normal distribution and empirical rule |
| 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 |
| Inferential Statistics & Study Design | 20% | - Confidence intervals for means/proportions - Hypothesis testing framework and interpretation - Sampling methods and bias - Observational studies vs experiments |
WGU Applied Probability and Statistics (FZO1 C955) Sample Questions:
1. Two dice rolled. Probability sum = 7?
A) 5/36
B) 1/6
C) 6/36
D) 1/12
2. In a class of 30 students, 18 are enrolled in a math course, and 12 are enrolled in a science course. Among the students enrolled in the science course, 8 are also enrolled in the math course.
What is the probability that a student is enrolled in the math course given that they are enrolled in the science course?
A) .44
B) .67
C) .40
D) .27
3. Variance of Poisson # = 5 = ?
A) 5
B) 0
C) 4
D) 1
4. A road safety research group wants to enhance road safety by analyzing the stopping distance of a car at different speeds. The group has recorded their data in the following scatterplot.
What is true about the outlier in the scatterplot?
A) The stopping distance of a car traveling at 10 mph is 20 feet.
B) The stopping distance of a car traveling at 60 mph is 500 feet.
C) The stopping distance of a car traveling at 30 mph is 190 feet.
D) The stopping distance of a car traveling at 40 mph is 560 feet.
5. Which measure of central tendency is least affected by outliers?
A) Median
B) Mean
C) Mode
D) Range
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: B | Question # 3 Answer: A | Question # 4 Answer: D | Question # 5 Answer: A |
