Course Spotlight: Survival Analysis

Convinced that he, like his father, would die in his 40’s, Winston Churchill lived his early life in a frenetic hurry.  He had participated in four wars on three continents by his mid-20’s, served in multiple ministerial positions by his 30’s, and published 12 books…

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"When I started teaching mandatory biostatistics classes in 1970 at UNC, I realized early on that a lot of kids didn't want to take a course they perceived as boring, so I kept things relaxed and fun."
Instructor Spotlight: David Kleinbaum

Likert scale assessment surveys

Do you work with multiple choice tests, or Likert scale assessment surveys?  Rasch methods help you construct linear measures from these forms of scored observations and analyze the results from such surveys and tests.  "Practical Rasch Measurement - Core Topics" In this course, you will learn practical…

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Historical Spotlight: Jacob Wolfowitz

World War II was a crucible of technological innovation, including advances in statistics. Jacob Wolfowitz, born a century ago (1920), looked at the problem of noisy radio transmissions. Coded radio transmissions were critical elements of military command and control, and they were plagued by the…

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Statistically Significant – But Not True

If you are looking for the Feature Engineering blog post, you can find it here: https://www.statistics.com/blog/1/1558369154-feature-engineering-data-prep-still-needed/ In 2015, at an Alzheimer's conference, Biogen researchers presented dramatic brain scans showing that the antibody aducanumab effectively cleared out plaque in the brain, plaque that was associated with…

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Student Spotlight: Barry Eggleston

Barry Eggleston is a health research statistician who has worked on both clinical trials and observational studies, and is currently with RTI in North Carolina. In his early career, his work was solely designing and analyzing clinical trials using typical biostatistics methods ranging from t-test…

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Job Spotlight: Sports Statistician

The field of sports statistician is not exactly new; the American Statistical Association's section on Sports Statistics was formed in 1992. Three of Statistics.com's instructors have professional experience in sports statistics - Ben Baumer (SQL) served as statistician for the NY Mets, Stephanie Kovalchik (Meta…

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Industry Spotlight: Baseball – Opening Day & Statistics in Sports

The U.S. baseball season opens Thursday, March 28, and celebrates the 48th season of analytics in baseball, beginning with the founding of the Sabermetric Society in 1971 (the same year that Satchel Paige entered the Hall of Fame). Analytics has come a long way in…

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Darwin’s Legacy in Statistics

Charles Darwin, the most famous grandson of the Enlightenment thinker Erasmus Darwin, published his ground-breaking theory of evolution, “The Origin of Species,”160 years ago. Another grandson of Erasmus, Francis Galton, became one of the founding fathers of statistics (correlation, the “wisdom of the crowd,” regression…

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Industry Spotlight: CROs

CRO's, or contract research organizations, are a $40 billion industry, growing at close to 12% per year. They provide contract services to the pharmaceutical industry, including statistical design and analysis, laboratory services, administration of clinical trials, and monitoring of drugs once they are on the…

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Handling the Noise – Boost It or Ignore It?

In most statistical modeling or machine learning prediction tasks, there will be cases that can be easily predicted based on their predictor values (signal), as well as cases where predictions are unclear (noise). Two statistical learning methods, boosting and ProfWeight, use those difficult cases in…

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Good to Great

In 1994, Jim Collins and Jerry Porras, former and current Stanford professors, published the best-seller Built to Last that described how "long-term sustained performance can be engineered into the DNA of an enterprise."  It sold over a million copies. Buoyed by that success, Collins and a…

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Space Shuttle Explosion

In 1986, the U.S. space shuttle Challenger exploded several minutes after launch. A later investigation found that the cause of the disaster was O-ring failure, due to cold temperatures. The temperature at launch was 39 degrees, colder than any prior launch. The cold caused the…

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Job Spotlight: Digital Marketer

A digital marketer handles a variety of tasks in online marketing - managing online advertising and search engine optimization (SEO), implementing tracking systems (e.g. to identify how a person came to a retailer), web development, preparing creatives, implementing tests, and, of course, analytics. There are…

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The False Alarm Conundrum

False alarms are one of the most poorly understood problems in applied statistics and biostatistics. The fundamental problem is the wide application of a statistical or diagnostic test in search of something that is relatively rare. Consider the Apple Watch's new feature that detects atrial…

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Instructor Spotlight – David Kleinbaum

David Kleinbaum developed several courses for Statistics.com, including Survival Analysis, Epidemiologic Statistics, and Designing Valid Statistical Studies. David retired a little over a year ago from Emory University, where he was a popular and effective teacher with the ability to distill and explain difficult statistical…

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Book Review: Active-Epi

ActivEpi Web, by David Kleinbaum, is the text used in two Statistics.com courses (Epidemiology Statistics and Designing Valid Studies), but it is really a rich multimedia web-based presentation of epidemiological statistics, serving the role of a unique textbook format for an introductory course in the…

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Survival Analysis

Convinced that he, like his father, would die in his 40's, Winston Churchill lived his early life in a frenetic hurry. He had participated in four wars on three continents by his mid-20's, served in multiple ministerial positions by his 30's, and published 12 books…

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Deming’s Funnel Problem

W. Edwards Deming's funnel problem is one of statistics' greatest hits. Deming was a noted statistician who took the statistical process control methods of Shewhart and expanded them into a holistic approach to manufacturing quality. Initially, his ideas were cooly received in the US and…

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Industry Spotlight: the Auto Industry

The auto industry serves as a perfect exemplar of three key eras of statistics and data science in service of industry: Total Quality Management (TQM) First in Japan, and later in the U.S., the auto industry became an enthusiastic adherent to the Total Quality Management…

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The Evolution of Clinical Trials

Boiling oil versus egg yolks One early clinical trial was accidental. In the 16th century, a common treatment for wounded soldiers was to pour boiling oil on their wounds. In 1537, the surgeon Ambroise Pare, attending French soldiers, ran out of oil one evening. He…

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GE Regresses to the Mean

Thirty years ago, GE became the brightest star in the firmament of statistical ideas in business when it adopted Six Sigma methods of quality improvement. Those methods had been introduced by Motorola, but Jack Welch's embrace of the same methods at GE, a diverse manufacturing…

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Examples of Bad Forecasting

In a couple of days, theWall Street Journalwill come out with its November survey of economists' forecasts. It's a particularly sensitive time, with elections in a few days and President Trump attacking the Federal Reserve for for raising interest rates. It's a good time to…

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Masters Programs versus an Online Certificate in Data Science from Statistics.com

We just attended the analytics conference of INFORMS' (The Institute for Operations Research and the Management Sciences) this week in Baltimore, and they held a special meeting for directors of academic analytics programs to better align what universities are producing with what industry is seeking.…

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Course Spotlight: Likert scale assessment surveys

Do you work with multiple choice tests, or Likert scale assessment surveys? Rasch methods help you construct linear measures from these forms of scored observations and analyze the results from such surveys and tests. "Practical Rasch Measurement - Core Topics" In this course, you will…

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Course Spotlight: Spatial Statistics Using R

Have you ever needed to analyze data with a spatial component? Geographic clusters of disease, crimes, animals, plants, events?Or describing the spatial variation of something, and perhaps correlating it with some other predictor? Assessing whether the geographic distribution of something departs from randomness? Location data…

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Be Smarter Than Your Devices: Learn About Big Data

When Apple CEO Tim Cook finally unveiled his company's new Apple Watch in a widely-publicizedrolloutearlier this month, most of the press coverage centered on its cost ($349 to start) and whether it would be as popular among consumers as the iPod or iMac. Nitin Indurkhyasaw…

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Twitter Sentiment vs. Survey Methods

Nobody expects Twitter feed sentiment analysis to give you unbiased results the way a well-designed survey will. A Pew Research study found that Twitter political opinion was, at times, much more liberal than that revealed by public opinion polls, while it was more conservative at…

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Personality regions

There are Red States and Blue States. The three blue states of the Pacific coast constitute the Left Coast. For Colin Woodward, Yankeedom comprises both New England and the Great Lakes. If you're into accessories, there's the Bible Belt, the Rust Belt, and the Stroke…

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Statistics.com Partners With CrowdANALYTIX to Offer New Online Course With Crowdsource Contest As Project

Crowdsourcing, using the power of the crowd to solve problems, has been used for many functions and tasks, including predictive modeling (like the 2009 Netflix Contest). Typically, problems are broadcast to an unknown group of statistical modelers on the Internet, and solutions are sought. Every…

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Mutual Attraction

Mutual attraction is a dominant force in the universe. Gravity binds the moon to the earth, the earth to the sun, the sun to the galaxy, and one galaxy to another. And yet the universe is expanding; the result is a larger universe comprised of…

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