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WGU Applied-Probability-and-Statistics Exam Syllabus Topics:
| Section | Objectives |
| Statistical Inference | - Hypothesis Testing (Introductory Level)
- 1. p-values interpretation
- 2. Null vs alternative hypothesis
- Estimation and Confidence Intervals
- 1. Confidence interval interpretation
- 2. Point estimates
|
| Regression and Modeling | - Linear Relationships
- 1. Slope and intercept interpretation
- 2. Simple linear regression
|
| Descriptive Statistics | - Single Variable Data Analysis
- 1. Data visualization (histograms, box plots)
- 2. Measures of dispersion (variance, standard deviation, range)
- 3. Measures of central tendency (mean, median, mode)
- Two Variable Data Analysis
- 1. Outliers and relationships
- 2. Correlation
- 3. Scatter plots interpretation
|
| Probability Theory | - Fundamental Probability Concepts
- 1. Conditional probability
- 2. Independent vs dependent events
- 3. Basic probability rules
- Probability Distributions
- 1. Normal distribution
- 2. Binomial distribution basics
|
WGU Applied Probability and Statistics (FZO1 C955) Sample Questions:
1. A researcher has collected information on students from a school. The researcher wants to display the ethnic groups represented in the school.
Which pair of graphs both display data in this manner?
A) Pie chart and box plot
B) Bar graph and pie chart
C) Line graph and bar graph
D) Bar graph and histogram
2. Empirical probability is based on:
A) Classical calculation
B) Subjective guess
C) Theoretical models
D) Observed frequency of events
3. Standard deviation measures:
A) Probability
B) Spread of data
C) Count
D) Central tendency
4. Poisson used for:
A) Rare events per interval
B) Continuous data
C) Categorical data
D) Success/failure trials
5. A team of scientists wants to understand the relationship between smoking and lung cancer. They collect data from 1,000 individuals, recording their smoking habits and whether they have been diagnosed with lung cancer. The scientists then analyze the data to find any correlations.
Is this study observational or experimental?
A) Experimental, because the researchers are analyzing the data to find correlations.
B) Observational, because the researchers are collecting data without manipulating any variables.
C) Observational, because the study involves a large sample size.
D) Experimental, because the researchers are testing the effects of smoking on lung cancer.
Solutions:
Question # 1 Answer: B | Question # 2 Answer: D | Question # 3 Answer: B | Question # 4 Answer: A | Question # 5 Answer: B |