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WGU Applied-Probability-and-Statistics Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Inferential Statistics & Study Design | 20% | - Confidence intervals for means/proportions - Hypothesis testing framework and interpretation - Observational studies vs experiments - Sampling methods and bias |
| Topic 2: Basic Numeracy & Algebra | 15% | - Linear equations, inequalities, graphing functions - Arithmetic operations, fractions, decimals, percentages - Exponents, roots, and basic formulas |
| Topic 3: Correlation & Regression | 20% | - Simple linear regression models - Correlation coefficient and interpretation - Predictions and limitations of regression - Interpreting slope, intercept, and R-squared |
| Topic 4: Descriptive Statistics | 25% | - Types of data: categorical, discrete, continuous - Measures of spread: range, IQR, variance, standard deviation - Measures of center: mean, median, mode - Graphical displays: histograms, boxplots, scatterplots |
| Topic 5: Probability Concepts | 20% | - Probability rules, independent and dependent events - Normal distribution and empirical rule - Discrete and continuous probability distributions - Conditional probability and Venn diagrams |
WGU Applied Probability and Statistics (FZO1 C955) Sample Questions:
In a class of 40 students, the following data were collected on their favorite sport:
* Soccer: 10 students
* Basketball: 15 students
* Tennis: 5 students
* Swimming: 10 students
What is the relative frequency of students whose favorite sport is not basketball?
- A. 0.625
- B. 0.25
- C. 0.50
- D. 0.75
Correct Answer: A 🗳️
Explanation: Only visible for LatestCram members. You can sign-up / login (it's free).
Type II error occurs when:
- A. Null accepted when false
- B. Null rejected when true
- C. Data error
- D. Correct decision
Correct Answer: A 🗳️
Explanation: Only visible for LatestCram members. You can sign-up / login (it's free).
Binomial expected value = ?
- A. n/p
- B. n × p
- C. p/n
- D. n + p
Correct Answer: B 🗳️
Explanation: Only visible for LatestCram members. You can sign-up / login (it's free).
One-sample t-test compares:
- A. Two independent samples
- B. Sample mean vs known population mean
- C. Proportions
- D. Variances
Correct Answer: B 🗳️
Explanation: Only visible for LatestCram members. You can sign-up / login (it's free).
A golf course is attempting to correlate golfing handicap with math SAT scores among local high school golfers. Ignoring potential confounding variables such as socioeconomic status, the golf course creates the following scatterplot.
What is the estimated value of r, the correlation coefficient, between these variables?
- A. #0.63
- B. 0.63
- C. 0.10
- D. #0.10
Correct Answer: D 🗳️
Explanation: Only visible for LatestCram members. You can sign-up / login (it's free).
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