Data Validation is a feature in Excel that allows users to pick from a list of rules to limit the type of data that can be entered into a cell. Follow the steps below to create a drop-down list ...

We’ll use data validation to prevent duplicate numbers in the Membership Number column. First, enter the following function into cell K3: =COUNTIF(Table1[Membership Number],B3) ...

If you want to make your survey data more readable, understandable, and accurate, you need to use some of the powerful features of Excel. Conditional formatting and data validation are two of them.

When the Data Validation dialog box appears, select the Settings tab, then click the tiny arrow beside the Allow field box, and select Custom from the drop-down list. 7.

Excel's data validation feature is more versatile than you might think. Learn how to use literal values, input values, list values, and even formulas to restrict input date values using data ...

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 ...