To apply data validation rules to a selected cell or range, head to the "Data" tab on the ribbon, and click the top half of the "Data Validation" icon if you're using a wide screen, or the left half ...

You can easily create a drop-down list in Excel to limit the values that can be entered in a column. Here's how to set one up ...

Excel's text functions, such as TRIM, UPPER, LOWER, and PROPER, can be used to clean up textual data. TRIM removes extra spaces from text entries. UPPER converts text to uppercase letters, LOWER does ...

To edit a drop-down list in Excel, you can use a number of tools depending on how you created the list. Here's what you need ...

Microsoft Excel makes it possible for users to easily get around incorrect data entries. In most cases, the user takes advantage of the data validation feature. However, there are times when this ...

If you see the error “This value doesn’t match the data validation restrictions defined for this cell” when entering a value in an Excel cell, the solutions ...

I've got an Excel 97 worksheet in which I need to validate some cells. No problem, I'll just use Data->Validate, right? Wrong. The built in validation works well enough as long as the user doesn't ...