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Monthly Archives: August 2011
Looking at LA Rainfall Data
This is a demonstration of using descriptive statistics (using graphs and numerical summaries) to make sense of a one-variable data set (the seasonal rainfall data in Los Angeles). The techniques we use are frequency distribution, histogram, and various numerical summaries. … Continue reading
The Osmond Brothers – a Binomial Example
According to Wikipedia, the Osmonds are an American family music group with a long and varied career – a career that took them from singing barbershop music as children, to achieving success as teen-music idols, to producing a hit television … Continue reading
The Birthdays of the Presidents of the United States
How likely is it to find two people with the same birthday in a group of partygoers? If the group only has 2 or 3 people, it is probably not likely. So how many people do you need to have … Continue reading
Introductory Statistics 
Reducing Door-To-Balloon Time Saves Lives
For the patients who experience a heart attack caused by a complete blockage of blood supply to the heart (called ST segment elevation myocardial infarction or STEMI), quick response is critical. These patients should be treated with artery-opening procedures soon … Continue reading →