Alan Salzberg is Senior Statistician and Principal of Salt Hill. His focus is statistical analysis, sampling, estimation, and modeling, especially using large or complex datasets. Many of Dr. Salzberg's consulting projects and research papers have related to the detection and measurement of bias. He has testified as an expert witness in statistics in federal and state court. Prior to joining Salt Hill, Alan was CEO of Analysis & Inference. He has also held positions in KPMG’s Economic Consulting group and at Morgan Stanley. Dr. Salzberg holds a Ph.D. in Statistics from the Wharton School of the University of Pennsylvania, where he also received a Bachelor of Science in Economics. For musings on everyday probability, see his blog: "What are the chances?"
Albert J. Lee is an Affiliate Consultant and teaming partner with Salt Hill. He is the Founding Principal and Expert Economist of Summit and holds a Ph.D. in Economics from UCLA.Email
Ira Skop is an Affiliate Consultant at Salt Hill and a partner at Shelter Island Risk Services. He is a recognized leader in risk data consulting and an expert in data visualization.Email
Rick Denning is an Affiliate Consultant at Salt Hill and the founder and president of Shelter Island Risk Services, an independent provider of risk management technology solutions.Email
The answer to the age-old question, according to every grandmother out there, is "buy." But do the data really support this? Housing as an Investment...
The evidence that showing vaccines are safe and that they save lives is generally overwhelming, so I'm always pleased to see another article reviewing the data behind them. I figure such articles will lead to even more people being vaccinated and more lives saved.
However, I was disappointed that a recent New York Times article did the statistics so poorly. The article compares 10,000 people who got various diseases with 10,000 people who were vaccinated. This comparison is inappropriate, because most people who do not get vaccinated do not get the disease they are being vaccinated for, and, especially for diseases like the flu, many people who do get vaccinated get the disease they were vaccinated for. A proper comparison would compare some number of people who were vaccinated against the same number who were not vaccinated.
It is often quipped that the lottery is a tax on stupidity (google "lottery: tax on stupidity" and you will see what I mean). I've always been bothered by this for two reasons: 1) one of the first peo...