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Thumbs up Answer: How do I assign a number to a name in another column?

To assign numbers to a group of names using the "COUNTIF" function in Excel:
  1. Make sure your data is organized in a table with headers. In your example, you have two columns: "Number" and "Name".
  2. In the first cell under the "Number" column (cell A2 in your example), enter the number you want to assign to the first name.
  3. In the second cell under the "Number" column (cell A3 in your example), enter the following formula:
    Formula:
    =IF(B3=B2,A2,A2+1
  4. Press enter to apply the formula to the cell.
  5. Click on the cell with the formula (cell A3 in your example) and drag the fill handle (the small square in the bottom right corner of the cell) down to the last row of your table.
  6. Release the mouse button to apply the formula to all the cells in the "Number" column.
  7. Your table should now have a unique number assigned to each name. If there are multiple instances of the same name, they will have the same number.
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