5. They show up differently when you’re struggling than when you’re succeeding.
Anyone can celebrate with you.
Good people stay when it’s hard.
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4. They feel uncomfortable receiving excessive praise.
Narcissists need it.
Good people feel strange when the attention turns entirely to them.
They’d rather talk about you.
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📊 Excel Basics #35 – Remove Duplicates
Duplicate records are common when working with data collected from multiple files, systems, or sources. Excel provides a quick way to identify and remove duplicate values without manually checking thousands of rows.
📌 What are Duplicates?
A duplicate occurs when the same record appears more than once.
Example:
Employee ID | Name | Department
101 | Rahul | IT
102 | Priya | HR
101 | Rahul | IT
103 | Amit | Finance
Here, the record for Employee ID 101 appears twice.
📌 1. Remove Duplicates
Select your dataset and go to: Data → Remove Duplicates
Excel will show a window where you can choose which columns should be checked. Click OK, and Excel removes duplicate rows based on the selected columns.
📌 2. Choosing Columns Matters
Suppose you have:
ID | Name | City
101 | Rahul | Pune
101 | Rahul | Mumbai
If you select all three columns, these are not considered duplicates because the City is different. But if you select only ID and Name, Excel considers them duplicates.
So always decide what makes a record "duplicate" before removing anything.
📌 3. Remove Duplicates from an Excel Table
If your data is already an Excel Table: Table Design → Remove Duplicates
You can select the columns you want Excel to use for identifying duplicates.
📌 4. Excel Keeps the First Record
When Excel removes duplicates, it generally keeps the first occurrence and removes subsequent matching records.
Example:
ID | Name
101 | Rahul
101 | Rahul
After removing duplicates:
ID | Name
101 | Rahul
📌 5. Remove Duplicates vs Find Duplicates
These are different tasks.
Remove Duplicates → Permanently removes duplicate records from the selected dataset.
Conditional Formatting → Duplicate Values → Highlights duplicates without deleting them.
💡 If you're unsure whether duplicates should be deleted, highlight them first and review the data.
📌 Real-World Example
Imagine you have 50,000 customer records collected from different sources. Some customers appear multiple times.
You can select: Customer ID → Remove Duplicates
Excel can quickly reduce the dataset to unique customer records.
📌 Common Mistakes
❌ Removing duplicates without checking which columns define uniqueness.
❌ Selecting only one column when the entire record should be compared.
❌ Not keeping a backup before deleting data.
❌ Assuming similar-looking records are always duplicates.
✅ Best Practices
• Always keep a backup of the original dataset.
• Decide which columns define a unique record.
• Review duplicates before deleting important data.
• Use Conditional Formatting first when you're unsure.
• For large datasets, use a unique ID whenever possible.
💡 Double Tap ❤️ For More
Roadmap to become a data analyst
1. Foundation Skills:
•Strengthen Mathematics: Focus on statistics relevant to data analysis.
•Excel Basics: Master fundamental Excel functions and formulas.
2. SQL Proficiency:
•Learn SQL Basics: Understand SELECT statements, JOINs, and filtering.
•Practice Database Queries: Work with databases to retrieve and manipulate data.
3. Excel Advanced Techniques:
•Data Cleaning in Excel: Learn to handle missing data and outliers.
•PivotTables and PivotCharts: Master these powerful tools for data summarization.
4. Data Visualization with Excel:
•Create Visualizations: Learn to build charts and graphs in Excel.
•Dashboard Creation: Understand how to design effective dashboards.
5. Power BI Introduction:
•Install and Explore Power BI: Familiarize yourself with the interface.
•Import Data: Learn to import and transform data using Power BI.
6. Power BI Data Modeling:
•Relationships: Understand and establish relationships between tables.
•DAX (Data Analysis Expressions): Learn the basics of DAX for calculations.
7. Advanced Power BI Features:
•Advanced Visualizations: Explore complex visualizations in Power BI.
•Custom Measures and Columns: Utilize DAX for customized data calculations.
8. Integration of Excel, SQL, and Power BI:
•Importing Data from SQL to Power BI: Practice connecting and importing data.
•Excel and Power BI Integration: Learn how to use Excel data in Power BI.
9. Business Intelligence Best Practices:
•Data Storytelling: Develop skills in presenting insights effectively.
•Performance Optimization: Optimize reports and dashboards for efficiency.
10. Build a Portfolio:
•Showcase Excel Projects: Highlight your data analysis skills using Excel.
•Power BI Projects: Feature Power BI dashboards and reports in your portfolio.
11. Continuous Learning and Certification:
•Stay Updated: Keep track of new features in Excel, SQL, and Power BI.
•Consider Certifications: Obtain relevant certifications to validate your skills.
50 𝐨𝐟 𝐭𝐡𝐞 𝐦𝐨𝐬𝐭 𝐢𝐦𝐩𝐨𝐫𝐭𝐚𝐧𝐭 𝐄𝐱𝐜𝐞𝐥 𝐟𝐨𝐫𝐦𝐮𝐥𝐚𝐬 𝐭𝐡𝐚𝐭 𝐜𝐚𝐧 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐩𝐞𝐫𝐟𝐨𝐫𝐦 𝐯𝐚𝐫𝐢𝐨𝐮𝐬 𝐭𝐚𝐬𝐤𝐬 𝐞𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐭𝐥𝐲.
S𝐔𝐌: Adds up numbers in a range.
𝐀𝐕𝐄𝐑𝐀𝐆𝐄: Calculates the average of numbers in a range.
𝐌𝐀𝐗: Returns the largest number in a range.
𝐌𝐈𝐍: Returns the smallest number in a range.
𝐂𝐎𝐔𝐍𝐓: Counts the number of cells that contain numbers in a range.
𝐂𝐎𝐔𝐍𝐓𝐀: Counts the number of non-empty cells in a range.
𝐈𝐅: Checks if a condition is met and returns one value if true and another value if false.
𝐕𝐋𝐎𝐎𝐊𝐔𝐏: Searches for a value in the first column of a table and returns a value in the same row from another column.
𝐇𝐋𝐎𝐎𝐊𝐔𝐏: Similar to VLOOKUP, but searches for a value in the first row of a table.
𝐈𝐍𝐃𝐄𝐗: Returns the value of a cell in a specific row and column of a range.
𝐌𝐀𝐓𝐂𝐇: Returns the relative position of an item in a range.
𝐂𝐎𝐍𝐂𝐀𝐓𝐄𝐍𝐀𝐓𝐄: Joins two or more text strings into one string.
𝐋𝐄𝐅𝐓: Returns the leftmost characters from a text string.
𝐑𝐈𝐆𝐇𝐓: Returns the rightmost characters from a text string.
𝐋𝐄𝐍: Returns the number of characters in a text string.
𝐓𝐑𝐈𝐌: Removes leading and trailing spaces from a text string.
𝐔𝐏𝐏𝐄𝐑: Converts text to uppercase.
𝐋𝐎𝐖𝐄𝐑: Converts text to lowercase.
𝐏𝐑𝐎𝐏𝐄𝐑: Capitalizes the first letter of each word in a text string.
𝐓𝐄𝐗𝐓: Formats a number or date value as text using a specified format.
𝐃𝐀𝐓𝐄: Returns the serial number of a particular date.
𝐓𝐎𝐃𝐀𝐘: Returns the current date.
𝐍𝐎𝐖: Returns the current date and time.
𝐃𝐀𝐓𝐄𝐃𝐈𝐅: Calculates the difference between two dates in years, months, or days.
𝐄𝐎𝐌𝐎𝐍𝐓𝐇: Returns the last day of the month, n months before or after a given date.
𝐑𝐎𝐔𝐍𝐃: Rounds a number to a specified number of digits.
𝐑𝐎𝐔𝐍𝐃𝐔𝐏: Rounds a number up, away from zero, to the nearest multiple of significance.
𝐑𝐎𝐔𝐍𝐃𝐃𝐎𝐖𝐍: Rounds a number down, toward zero, to the nearest multiple of significance.
𝐈𝐅𝐄𝐑𝐑𝐎𝐑: Returns a value you specify if a formula evaluates to an error, otherwise returns the result of the formula.
𝐒𝐔𝐌𝐈𝐅: Adds the cells specified by a given condition or criteria.
𝐒𝐔𝐌𝐈𝐅𝐒: Adds the cells in a range that meet multiple criteria.
𝐀𝐕𝐄𝐑𝐀𝐆𝐄𝐈𝐅: Calculates the average of cells specified by a given condition or criteria.
𝐀𝐕𝐄𝐑𝐀𝐆𝐄𝐈𝐅𝐒: Calculates the average of cells that meet multiple criteria.
𝐂𝐎𝐔𝐍𝐓𝐈𝐅: Counts the number of cells specified by a given condition or criteria.
COUNTIFS: Counts the number of cells that meet multiple criteria.
RAND: Returns a random number between 0 and 1.
RANDBETWEEN: Returns a random number between the numbers you specify.
PI: Returns the value of pi (3.14159265358979).
POWER: Raises a number to a power.
SQRT: Returns the square root of a number.
LOG: Returns the logarithm of a number to the base you specify.
EXP: Returns e raised to the power of a given number.
MOD: Returns the remainder of a division operation.
INT: Rounds a number down to the nearest integer.
ABS: Returns the absolute value of a number.
AND: Returns TRUE if all its arguments are TRUE, and FALSE otherwise.
OR: Returns TRUE if any argument is TRUE, and FALSE otherwise.
NOT: Returns the opposite of a logical value.
SUMPRODUCT: Multiplies corresponding components in the given arrays, and returns the sum of those products.
TRANSPOSE: Transposes rows and columns in a range of cells.
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