PreparED Study Materials
STAT 2103: Statistical Business Analytics
School: Temple University
Number of Notes and Study Guides Available: 1
Notes
Videos
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.
Brand X vs. Brand Y: 95% Confidence in Voltage Difference
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Compare the voltages of Brand X and Brand Y batteries using statistical analysis. Learn how to determine a 95% confidence interval for their mean differences. Understand the process from data collection to interpretation of results.
Evaluating Tornado Length Claims: A Statistical Breakdown
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore a statistical approach to analyze the claim about average tornado lengths. Understand the nuances of hypothesis testing, from setting null and alternative hypotheses to interpreting P-values. Witness a comprehensive breakdown of the evidence from a sample of 500 tornadoes.
Cereal Box Weights: Z-Scores, Probabilities & Truth Behind Claims
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the intricacies of evaluating cereal box weights using Z-scores and normal distribution. By examining both individual boxes and a sample mean, understand the probabilities of achieving certain weight values. Gain insights into how statistical tools help interpret real-world product claims.
Two-Sample T-Test: Analyzing Control vs. Supplemented Groups
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the steps to conduct a two-sample t-test using a control and supplemented group. Through hypothesis testing, standard deviation, and P-value interpretation, we analyze the means of both groups to determine statistical differences.
Analyzing Voter Demographics: Independence & Exclusivity
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Analyze the relationships between different political affiliations and age groups. Determine whether certain events are independent, mutually exclusive, or neither, based on the provided probabilities. The findings offer a nuanced understanding of voter demographics and their interdependencies.