PreparED Study Materials
Videos
2010 US Gas Prices: Insights with Chebyshev’s Inequality
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Unpack the average US gasoline prices in December 2010 using Chebyshev’s Inequality. Discover the minimum percentage of gas stations within specific price deviations. Learn how prices ranged based on standard deviations from the mean.
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.
Calculating Permutations: 720 Ways to Arrange 6 Objects
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the principles of permutations with 6 distinct objects. Learn the ins and outs of factorial calculation and its application to combinatorics. Grasp the method to find the number of unique arrangements for any set of items.
Analyzing Student Homework Times: Quartiles & Data Insights
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Examine a dataset that tracks student homework durations. Understand quartiles, the interquartile range, and skewness in the data. Discover insights into typical study durations and outlier behaviors.
Buteyko Breathing's Impact on Asthma: A Study Analysis
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
In this video, we examine the Buteyko method's impact on asthma symptoms using a study of 600 patients. Participants were divided into two groups, one practicing the technique and the other not. The Buteyko group showed significant improvement in life quality and symptom reduction.
Electronic Failures: Deciding Between Minor & Major Defects Cost-Effec
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the intricacies of determining the cause of electronic system failures, either minor or major defects, using statistical distributions. Learn how to minimize the expected cost and make informed decisions based on soundings and loss tables













