By Jon Hasenbank and John Appiah Kubi, Grand Valley State University This article introduces a method for identifying statistically meaningful differences between two data sets using the mean absolute deviation, known as MAD and a measure of variability taught in middle school curricula under the Common Core State Standards, which parallel the recommendations of the Pre-K-12 … [Read more...] about How MAD Must We Be? A Robust Test for Identifying Meaningful Differences Using the Mean Absolute Deviation
variability
A Sampling Activity to Anchor Big Statistical Ideas
By Sandra Madden, University of Massachusetts - Amherst Have you ever gone looking for a highly productive and foolproof statistical reasoning task? In 2006, I designed a statistical sampling task for use in a professional development project. The intention was to showcase important statistical ideas, encourage conjecture and statistical argument, and illustrate the … [Read more...] about A Sampling Activity to Anchor Big Statistical Ideas