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Drop-down lists are a powerful way to organize your data. Free up precious space on your spreadsheet by hiding those columns that don't need to be visible, and increase the usability of your data set by letting users filter for what they want. Make your data validation cell adjustable by clicking the Data Validation button on the Ribbon, then click Cells at the bottom of that tool pane. Right-click inside the cell you want to change into a list, select Format Cells from the menu. On this tool pane, expand More Options and make sure Allow list is checked.

A drop down list is used to create a user interface that allows users to select one or more values from a list. It is designed as a visual aid that helps users make decisions and selections. The main function of a drop down list is to help the user make selections and decisions by displaying the available options in an organized and easy-to-see format. A drop down list can also be used for sorting data, displaying lists of possible values, and providing feedback to the user as they navigate through the choices given.

When you enter data into an Excel spreadsheet, it has to be validated in order to make sure that your data is correct. There are different types of validation available in Excel. Data validation: If you want to make sure that the cell’s content is not empty before you enter any text, formatting, or data in the cell, you can use data validation options. Data validation options are available in most versions of Excel and allow people with less technical skills to execute tasks with precision. There are different types of validation in Excel. The two most important types are formula validation and cell validation. Let's take a closer look at the difference between the two. Formula validation is when you type a formula into a cell that checks for errors before cells tend to be filled with data. Cell validation is when you type a formula into a cell and it will not allow this to happen if there are any errors in the formula. The difference between the two is that formulas can't have an error in them so they don't have to be validated, but cells do need to be validated because they have data going into them.

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