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19_044039 ch14.qxp  11/21/06  11:06 AM  Page 249
                                             Creating Formulas That
                                                          Count and Sum
                                            any of the most common spreadsheet questions involve counting and
                                            summing values and other worksheet elements. It seems that people  IN THIS CHAPTER
                                     Mare always looking for formulas to count or to sum various items in a  Information on counting and
                                     worksheet. If I’ve done my job, this chapter answers the vast majority of such  summing cells
                                     questions. It contains many examples that you can easily adapt to your own
                                     situation.                                                     Basic counting formulas
                                                                                                    Advanced counting formulas
                                     Counting and Summing Worksheet                                 Formulas for performing
                                     Cells                                                          common summing tasks
                                                                                                    Conditional summing formulas
                                     Generally, a counting formula returns the number of cells in a specified range that  using a single criterion
                                     meet certain criteria. A summing formula returns the sum of the values of the cells
                                     in a range that meet certain criteria. The range you want counted or summed  Conditional summing formulas
                                     may or may not consist of a worksheet database.
                                                                                                    using multiple criteria
                                     Table 14.1 lists the Excel worksheet functions that come into play when creating
                                     counting and summing formulas. Not all these functions are covered in this
                                     chapter. If none of the functions in Table 14.1 can solve your problem, it’s likely
                                     that an array formula can come to the rescue.

                              CROSS-REF        See Chapters 17 and 18 for detailed information and examples of
                              CROSS-REF
                                               array formulas used for counting and summing.
                                  NOTE         If your data is in the form of a table, you can use autofiltering to
                                  NOTE
                                               accomplish many counting and summing operations. Just set the
                                     autofitler criteria, and the table displays only the rows that match your criteria
                                     (the nonqualifying rows in the table are hidden). Then you can select formulas to
                                     display counts or sums in the table’s total row. Refer to Chapter 6 for more infor-
                                     mation on using tables.






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