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I spotted this good description of Simpson’s paradox in the trend data on wages over at the Inside-R blog today. Revolution Analytics did a good job explaining how Simpson’s paradox applies. At every education level median wages declined. However, for all people median wages have increased over the same time period. The reason for the […]
This past week there were a number of stories on income mobility in the United States. The work these reports were based on was a paper titled: “The Economic Impacts of Tax Expenditures: Evidence from Spatial Variation Across the U.S.” out of Harvard and the University of California. Interestingly, based on the title, the main […]
Combine a poorly designed question with a poor analysis and what to you get? Last week the Washington Post conducted a survey on the Washington area Metro asking questions about attitudes and reasons for not using the system. A piece of the graphic they used to display the data is posted on the right. The […]