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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Dummy Variable

A dummy variable is a binary (0/1) variable created to indicate whether a case belongs to a particular category.  Typically a dummy variable will be derived from a multi-category variable. For example, an insurance policy might be residential, commercial or automotive, and there would be three dummy variables created:

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Things are Getting Better

In the visualization below, which line do you think represents the UN's forecast for the number of children in the world in the year 2100? Hans Rosling, in his book Factfulness, presents this chart and notes that in a sample of Norwegian teachers, only 9%…

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