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Excel's Formula - sisman

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248<br />

Filtering a table<br />

Part II: Using Functions in Your <strong>Formula</strong>s<br />

Filtering a table refers to displaying only the rows that meet certain conditions. After applying a<br />

filter, rows that don’t meet the conditions are hidden.<br />

Excel provides two ways to filter a table. This section discusses standard filtering (formerly<br />

known as AutoFiltering), which is adequate for most filtering requirements. For<br />

more complex filter criteria, you may need to use advanced filtering (discussed later in<br />

this chapter).<br />

Using the real estate table, assume that you’re only interested in the data for the N. County area.<br />

Click the drop-down control in the Area Row header and remove the check mark from Select All,<br />

which deselects everything. Then, place a check mark next to N. County and click OK. The table,<br />

shown in Figure 9-9, is now filtered to display only the listings in the N. County area. Notice that<br />

some row numbers are missing; these rows contain the filtered (hidden) data.<br />

Also notice that the drop-down arrow in the Area column now shows a different graphic — an<br />

icon that indicates the column is filtered.<br />

Figure 9-9: This table is filtered to show only the information for N. County.<br />

You can filter by multiple values — for example, filter the table to show only N. County and<br />

Central.<br />

You can filter a table using any number of columns. For example, you may want to see only the<br />

N. County listings in which the Type is Single Family. Just repeat the operation using the Type<br />

column. All tables then display only the rows in which the Area is N. County and the Type is<br />

Single Family.<br />

For additional filtering options, select Text Filters (or Number Filters, if the column contains values).<br />

The options are fairly self explanatory, and you have a great deal of flexibility in displaying<br />

only the rows that you’re interested in.

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