1. Goal Seek & Solver Bernard Liengme http://people.stfx.ca/bliengme/info/ In Jan 23 folder

2. Goal Seek Sometimes called a ‘reverse solver’ The objective is to make the set cell have a specified value by altering the value of the changing cell. Goal Seek is found in Data | Data Tools | What-if Analysis

3. Formula in B3 is =B1*B2 We could keep varying B2 until B3 equals 2500. A hit-and-miss method Or we could use Goal Seek Remember that the result is STATIC Open Goal&Solver.xlsx

4. Solver A product from Frontline Solvers (http://www.solver.com/) licensed by Microsofthttp://www.solver.com/ Many more features than Goal Seek Can solve equations, and find Min and Max conditions Remembers its setting; so it is easiest to have one Solver model on each worksheet Open Solver sheet Solver is found: Data | Analysis | Solver

5. What if Solver is Missing? Solver is missing here Use File | Options | Add-ins | to open the Add-in Manager (see next slide) Video SolverAddIn.mp4

6. Make this read Excel Add-ins Press Go Click to add check mark to Solver Add-in

7. Scenarios A method of having one worksheet remember and display a model with different cell values Good tutorial at http://www.homeandlearn.co.uk/excel2007/e xcel2007s7p3.html http://www.homeandlearn.co.uk/excel2007/e xcel2007s7p3.html Let’s open the Scenario sheet in the embedded workbook We can make a Scenario Summary to generate a table of results Video Senario.mp4

8. Scenario Summary Here is a very simple example Video SenarioSummary.mp4