This is a basic "how to" video that walks through the mechanics of using the multivariate tab in the Flat Regression Tool (in Excel).  This is just the simple mechanics of using the tool to do the regression and stops short of describing the process of analyzing the results or making model selection decisions.    This is based on version 7 of the "Flat regression tool v7.xlsx" and is using the data in "Solid Rocket Data Set Start.xlsx" as the demonstration data.