PreparED Study Materials
Notes
Videos
Poisson Distribution in Event Count & Uranium Discovery
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the dynamics of Poisson distribution using both theoretical understanding and a practical application related to discovering uranium deposits. With the help of Bayes' formula and parameter adjustments, interpret various probabilities and outcomes for event occurrences.
Estimating Study Hours: A 99% Confidence Method"
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore how a university dean estimates freshmen study hours using statistical methods. Understand the importance of z-scores, confidence levels, and sample sizes in making accurate predictions. Learn how to ensure results are within a desired error margin.
Assumptions in Statistics: A High School Age Distribution Error
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Analyze the statistical assumptions made about high school students' ages, emphasizing the importance of understanding distributions before applying the Standard Normal Table.
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:
full solution
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.
Comparing Ages: Slot Machine vs. Roulette Players
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Examine the mean ages between two distinct groups: slot machine players and roulette enthusiasts. Utilizing the independent sample t-test, evaluate if there's a significant age difference between the two groups. The findings offer a nuanced understanding of player demographics in gaming environments.
Computers in Schools: Probabilities & Distributions
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Assess the distribution of computers across schools using statistical methods. Determine the probability of a randomly selected school having a specific number of computers. From fewer than 50 to more than 100 computers, derive insightful conclusions about school infrastructures.














