Spreadsheet Models for Managers

Getting Access to Spreadsheet Models for Managers

If Spreadsheet Models for Managersyou use Excel to model businesses, business processes, or business transactions, this course will change your life. You’ll learn how to create tools for yourself that will amaze even you. Unrestricted use of this material is available in two ways.

As a stand-alone Web site
It resides on your computer, and you can use it anywhere. No need for Internet access.
At this Web site
If you have access to the Internet whenever you want to view this material, you can purchase on-line access. Unlimited usage. I’m constantly making improvements and you’ll get them as soon as they’re available.

To Order On Line

Order "Spreadsheet Models for Managers, on-line edition, one month" by credit card, for USD 69.95 each, using our secure server, and receive download instructions by return email.
Order "Spreadsheet Models for Managers, on-line edition, three months" by credit card, for USD 199.00 each, using our secure server, and receive download instructions by return email.
Order "Spreadsheet Models for Managers, downloadable hyperbook edition" by credit card, for USD 199.00 each, using our secure server, and receive download instructions by return email.

To Order by Mail

Make your check payable to Chaco Canyon Consulting, for the amount indicated:
  • For the download: USD 199.00
  • For access online for three months: USD 199.00
  • For access online for one month: USD 69.95
And send it to:
Chaco Canyon Consulting
700 Huron Avenue, Suite 19C
Cambridge, MA 02138

To use the course software you’ll need some other applications, which you very probably already have. By placing your order, you’re confirming that you have the software you need, as described on this site.

Spreadsheet Models for Managers

Session 2
Analysis and Synthesis
Summary of Pages

The technique in which we decompose a problem into parts, and then deal with the parts is called analysis. In synthesis, we reassemble the parts to obtain the solution to the original problem. For many problems, only this approach makes them tractable.

But when we try it, we can still get lost in a maze of details and complexity. To limit this risk, Excel offers a variety of tools, the most valuable of which are array arithmetic and matrix products. These methods enable us to deal with arrays of data at a very high level, reducing the need to enter formulas in individual cells, removing from the formulas any dependence on the size of the arrays, and reducing the number of cells that we have to maintain.

These methods are powerful. And the best part is: relatively few people use them or even understand them. Many of our students have remarked that these techniques alone justified the effort and cost of taking this course.

Below is a summary of pages for Session 2.

  1. Review of Last Time
  2. Analysis and synthesis
  3. Example of analysis and synthesis
  4. Implementation
  5. Arrays in Excel
  6. Array arithmetic
  7. Matrix multiplication
  8. Matrix multiplication examples
  9. Transposing matrices
  10. Application examples
  11. The main points
  12. Reference reading
  13. Nexttime

Links to other materials for Session 2.

Last Modified: Wednesday, 27-Apr-2016 04:15:26 EDT

Matrix Multiplication and Array Arithmetic

For many of you, matrix multiplication and array arithmetic are new ideas. It’s easy to get lost in the details of how they work and then forget about why we use them.

To keep a clear view of the forest and avoid focusing only on the trees, remember why we use matrix multiplication and array arithmetic. Briefly, we use them because we find that it’s very often helpful to decompose a problem into parts (analysis), then do calculations on the parts, and finally reassemble the final solution from the results of those partial calculations (synthesis).

Matrix multiplication and array arithmetic provide us with very convenient methods for performing those intermediate calculations on the parts. They’re the tools that make analysis and synthesis so powerful.