If you 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
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At this Web site
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 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.
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 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

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 Excel worksheet functions for array access
• index
• index(1 Dimensional Array, n) → nth item
• index(2 Dimensional Array, m, n) → nth item in mth row
• index(2 Dimensional Array, n, 0) → nth row
• index(2 Dimensional Array, 0, n) → nth column
• offset
• offset(reference, n, m) →
• a region of the same shape and size as reference, displaced down n rows and to the right m columns
• offset(reference, n, m, p, q) →
• a p x q region displaced down n rows and to the right m columns
• If either p or q is omitted, the result is the same as if you had supplied the corresponding size of reference

These functions are real workhorses. They’re among the most commonly used worksheet functions in all of Excel. Part of the reason for this is that they’re easy to understand, and most people can figure out what they do. Another reason is that they do really useful things.

But don’t fall into the trap of overusing them. Often you can use other techniques that get you what you need much more easily.

index can also accept a fifth argument. If the first argument is a reference to a compound range, that is, a range with two or more discontiguous elements (called areas), the fifth argument indicates which of the areas is to be dealt with by the other arguments.

Avoid Unnecessary Spaces in Formulas

The space character, in many cases, doesn’t change the value of a formula. For instance, these two formulas return the same value:

• =A1 + 2
• =A1+2

Some people think that well-placed spaces make formulas easier to read. Although that might be true, the practice is both inconvenient and extremely dangerous. More

Keyboard Power Tips

Excel’s online help, and many of the how-to books you can buy, provide long lists of keystroke shortcuts for carrying out specific operations, such as inserting rows, selecting regions, or deleting columns. And they are useful.

But the true power of the keyboard comes not from using these particular commands. Rather, it comes from learning combinations that are useful for particular situations that you encounter frequently.

For instance, there’s no command for deleting the rows that contain the selected cells, but there is a combination:

• Shift+Space selects the rows that contain the selection.
• Ctrl+- deletes the now-selected rows.

And so, Shift+Space Ctrl+- deletes the rows containing the selection.

Learning a vast array of keystroke commands is probably less useful than learning the keystroke combinations that do exactly what you need to do most often.