How to create a drop-down list using the DATA VALIDATION function in Excel?

To create a drop-down list using the DATA VALIDATION function in Excel, follow these steps:

1. Open Excel and select the cell where you want to create the drop-down list.

2. Go to the "Data" tab on the Excel ribbon.

3. Click on the "Data Validation" button in the "Data Tools" group.

4. In the "Data Validation" dialog box that appears, go to the "Settings" tab.

5. In the "Allow" dropdown menu, select "List".

6. In the "Source" box, you can either manually enter the values you want in the drop-down list (separated by commas), or you can select a range of cells that contain the values.

7. Click "OK" to close the dialog box.

Your drop-down list will now be created in the selected cell. When you click on the cell, a drop-down arrow will appear, allowing you to choose a value from the list.