PreparED Study Materials
ST 762: ST 762
School: North Carolina State University
Number of Notes and Study Guides Available: 2
Notes
Videos
Reaction Times in Anderson's Study: Analyzing Central Tendencies
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore Anderson's 1999 study on how attention load impacts reaction times. Through hands-on analysis, understand the computation of mean, median, and mode from the provided data. Highlighting the significance of the median in capturing the central tendency amidst potential outliers.
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:
full solution
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.
Decoding Probabilities: Unions, Intersections, and Complements
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the intricacies of calculating probabilities using set theory concepts such as union and intersection. With step-by-step computations, understand how to find the likelihood of events A and B occurring or not occurring together. Witness the application of classic probabilistic formulas.
Thread Strength After Heat Treatment: A 99% Confidence Analysis"
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the impact of heat treatment duration on thread breaking strength. Using statistical analysis, we assess the difference in mean strengths between batches. Confidence intervals help quantify this difference with 99% certainty.
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:
full solution
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.
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:
full solution
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.

















