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16_044039 ch11.qxp  11/21/06  11:04 AM  Page 202
                                   Part II
                                              Working with Formulas and Functions
                                       FIGURE 11.18
                                      When you use names, using a range-intersection formula to determine values is even more useful.
                                             Excel created the following names:
                                                 North
                                                                                   Qtr1
                                                            =Sheet1!$B$2:$E$2
                                                                                              =Sheet1!$B$2:$B$5
                                                 South
                                                            =Sheet1!$B$3:$E$3
                                                                                              =Sheet1!$C$2:$C$5
                                                                                   Qtr2
                                                 West
                                                                                   Qtr3
                                                            =Sheet1!$B$4:$E$4
                                                                                              =Sheet1!$D$2:$D$5
                                                 East
                                                                                   Qtr4
                                                                                              =Sheet1!$E$2:$E$5
                                                            =Sheet1!$B$5:$E$5
                                             With these names defined, you can create formulas that are easy to read and use. For example, to calculate
                                             the total for Quarter 4, just use this formula:
                                                  =SUM(Qtr4)
                                             To refer to a single cell, use the intersection operator. Move to any blank cell and enter the following formula:
                                                  =Qtr1 West
                                             This formula returns the value for the first quarter for the West region. In other words, it returns the value
                                             that exists where the Qtr1 range intersects with the West range. Naming ranges in this manner can help
                                             you create very readable formulas.
                                             Applying names to existing references
                                             When you create a name for a cell or a range, Excel doesn’t automatically use the name in place of existing
                                             references in your formulas. For example, suppose you have the following formula in cell F10:
                                                  =A1–A2
                                             If you define a name Income for A1 and Expenses for A2, Excel won’t automatically change your formula
                                             to =Income–Expenses. Replacing cell or range references with their corresponding names is fairly easy,
                                             however.
                                             To apply names to cell references in formulas after the fact, start by selecting the range that you want to
                                             modify. Then choose Formulas ➪ Defined Names ➪ Define Name ➪ Apply Names. Excel displays the
                                             Apply Names dialog box, as shown in Figure 11.19. Select the names that you want to apply by clicking
                                             them and then click OK. Excel replaces the range references with the names in the selected cells.

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