Enter Goal Seek and the Solver add-in, two tools that let Excel do the heavy ... use Goal Seek in Excel for multiple cells at once, this is it. It takes one goal variable and adjusts a number ...

A complex Excel 2007 workbook could require multiple sheets. By default, Microsoft provides three sheets on each workbook, but you can add as many as you need. Clicking the "Insert Worksheet ...

select "Excel Add-Ins" from the "Tools" menu. You can create a regression output using the Data Analysis ToolPak in just a few clicks. The independent variable in Excel goes in the X range.