🧹 Data Cleaning – An Essential Data Skill

Data cleaning means finding and fixing incorrect, incomplete, duplicate, or inconsistent data before using it.

🔹 Remove duplicate records
🔹 Fix spelling & formatting errors
🔹 Handle missing information
🔹 Standardize dates, names & formats
🔹 Check for incorrect or invalid data

📊 Why is it important?
✅ Improves data accuracy
✅ Makes spreadsheets easier to manage
✅ Reduces errors
✅ Useful for Data Entry, Excel, MIS & Data Processing Jobs

💡 Tip: Always review your data before submitting or analyzing it.

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📊 Excel Interview Questions

Preparing for a Data Entry, MIS or Back Office interview?

Here are some common Excel questions you should know:

1. What is VLOOKUP and how does it work?
2. What is the difference between VLOOKUP and XLOOKUP?
3. What is HLOOKUP?
4. What is a Pivot Table?
5. How do you remove duplicate data?
6. How do you use Sort & Filter?
7. What is Conditional Formatting?
8. What is Data Validation?
9. What is the IF function?
10. What is the difference between COUNT, COUNTA and COUNTIF?
11. How do you find and replace data?
12. How do you freeze rows or columns?
13. What is the use of CONCATENATE or CONCAT?
14. How do you split data into multiple columns?
15. What is the SUMIF/SUMIFS function?
16. How do you identify blank cells?
17. How do you protect an Excel worksheet?
18. What are Excel shortcuts and why are they useful?
19. How do you create a basic chart in Excel?
20. How do you handle large datasets in Excel?

💡 Tip: Practice these Excel features before your interview to improve your confidence.

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📊 Data Collection – An Essential Online Skill

Data collection involves gathering accurate information from different sources and organizing it for further use or analysis.

🔹 Collecting data from websites
🔹 Online research & information gathering
🔹 Collecting data in Excel/Google Sheets
🔹 Web forms & data entry
🔹 Checking and organizing collected data

💻 Useful Skills:
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