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Genuine Evaluation: Inappropriate comparisons – Jehovah’s witness surgery study

Originally posted at Genuine Evaluation A new study about alternatives to blood transfusion, published recently in the Archives of Internal Medicine, seems to rest on a faulty premise.  The study...

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Evergreen Evaluation: Making Back-to-Back Graphs in Excel

Originally posted at Evergreen Evaluation Let’s say we’re interested in comparing how two groups – oh, teachers and principals – responded to a survey. One way to visually display that comparison would...

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freshspectrum: Developing a Counterfactual, 5 illustrations

Originally posted at freshspectrum The idea for this post came from a tweet sent out by David Henderson a couple of weeks ago. Lack of data literacy is biggest barrier to #eval. Everyone in sector...

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