Hi there! It sounds like you're having trouble with a regression analysis in Excel. The error message you're receiving indicates that there is non-numeric data in the range you've selected for your analysis. Here are a few steps you can take to troubleshoot this issue:

1. Double-check your data range: Make sure that the range you've selected for your analysis only contains numeric data. If there are any cells that contain text or other non-numeric characters, this could be causing the error message.
   
2. Check for hidden characters: Sometimes, even if a cell appears to only contain numeric data, there may be hidden characters or formatting that is causing the issue. To check for hidden characters, select the range of data and go to the "Home" tab in the Excel ribbon. Click on the "Clear" dropdown menu and select "Clear Formats." This will remove any hidden formatting that may be causing the issue.
   
3. Use the
   Code:

   ISNUMBER

   function: Another way to check for non-numeric data is to use the
   Code:

   ISNUMBER

   function. This function will return "TRUE" if a cell contains a number and "FALSE" if it does not. You can use this function to create a new column next to your data and then filter for any cells that return "FALSE."
   
4. Check for blank cells: Finally, make sure that there are no blank cells within your data range. If there are any blank cells, this could be causing the error message. You can either fill in the blank cells with a value or exclude them from your analysis.

I hope these tips help you troubleshoot the issue and get your regression analysis up and running!