PreparED Study Materials
STAT 325: Into to Statistics
School: University of Louisiana at Lafayette
Number of Notes and Study Guides Available: 1
Study Guides
Videos
Car Theft Rates: Does Your Car Type Influence Risk?
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the relationship between specific car types and their theft rates. This video assesses correlations between car models like the Honda Accord, Toyota Camry, and others, emphasizing the difference between correlation and causation.
Understanding Null vs Alternative Hypotheses in Real-world Scenarios
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore various scenarios and understand the fundamental principles of the null and alternative hypotheses in statistical testing. This video breaks down how these hypotheses represent current beliefs and potential deviations, aiding in the interpretation of statistical findings.
Calculating Confidence Interval for Educational TV Viewership
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Learn how to determine a 90% confidence interval for the proportion of people who watch educational television based on a survey. Understand how to utilize the z-score and interpret results, guiding decisions for a television company's publicity efforts.
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.
Analyzing Age Distribution of Proofreaders: A Statistical Approach
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Discover the statistical process behind analyzing the age distribution of proofreaders at a publishing company. Learn how to use the Z-score formula for individual and sample mean probabilities, and how to interpret results using a Z-table.