PreparED Study Materials
STAT 320: STAT 320
School: University of Tennessee - Knoxville
Number of Notes and Study Guides Available: 1
Notes
Videos
Uniform Data: Probabilities of Sample Means
Want To Learn More? To watch the entire video and ALL of the videos in the series:
This video offers a comprehensive look into the discrete uniform population, analyzing a sample size of 54 selected with replacement. Through calculated steps, viewers learn how to determine probabilities for a sample mean within specified limits. Utilizing Z-scores and standard normal tables, the session illuminates statistical principles in real-world scenarios.
Comparing Stock Returns & Volatility: T-test and F-test Insights
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Compare the mean returns and volatilities of two stocks using t-test and F-test methods. Through the application of hypothesis testing and P-value calculations, we determine which stock provides higher returns and which is riskier.
Analyzing Grade Variance: Is it More than Usual? A Chi-Square Test
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Discover the process of analyzing variance in midterm grades with a Chi-Square test. Understand the significance of high variance and its implications. Follow along as we assess a professor's suspicion about unusually varied student performance.
Testing the 123-Gallon Daily Water Claim: Fact or Fiction?
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the claim that average daily water consumption is 123 gallons. Using statistical testing, we evaluate a new sample against the Old Farmer’s Almanac claim. Learn how to interpret p-values and t-scores in hypothesis testing.
Which Confidence Level Produces the Widest Interval? Explained!
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Uncover the relationship between confidence levels and interval widths. Grasp how the range of confidence intervals broadens with increasing confidence. Understand the trade-offs in statistical certainty and estimation.
42.1 Web Visits: How It Stacks Up to U.S. Average
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore how hypothesis testing is used to compare a sample mean of Internet visits to the national average. Through calculations and statistical analysis, we determine if a sample of users' web usage significantly deviates from the average U.S. web usage.