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We have added another free software resource to the Software page and another online textbook to the Text & Trade Books page. The software is Bob Nau and John Butler's Regressit, a free Excel add-in for regression and multivariate analysis. The textbook, with lecture notes and sample data, has been compiled by Bob Nau to support his statistical forecasting course at Duke University. See the Freeware section on the Software page here, or in the left menu bar, for Regressit, and the Text & Trade Books page here, or in the left menu bar, for Bob's online book Statistical forecasting: Notes on regression and time series analysis.