Excel でのデータ検証

In this chapter, you will discover the powerful data validation features available in Excel that help maintain the integrity of your datasets. You will learn how to set specific rules for data entry, ensuring that only valid data is input into your worksheets. We will explore various validation techniques, including dropdown lists, custom formulas, and error alerts. By the end of this chapter, you will have the skills to implement effective data validation strategies in Excel, enhancing the accuracy and reliability of your data for analysis.

Real-life applications of Data Validation for a car company that suffers from invalid data created by its sales team. Your task is to help this company.