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kabradley13
kabradley13
Level I

One best fit lines with multiple data sets

Created: Apr 20, 2021 06:22 PM  |  Last Modified: Jun 8, 2023 5:32 PM (1595 views)

How do I calculate the residuals of data set B,C, and D using the best fit line of data set A?

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1 REPLY 1
txnelson
Super User txnelson
Super User

Re: One best fit lines with multiple data sets

Apr 20, 2021 11:27 PM (1578 views)  |  Posted in reply to message from kabradley13 04-20-2021
  1. Run the regression on your initial data table
  2. Go to the red triangle in the output and Save the Predicted Formula, or Save Predicted, both will give you the information you need
  3. Go to the new column and open the formula for Predicted column
  4. Copy the formula into the paste buffer
  5. Go to the new data table you want the residuals for
  6. Create a new column in the data table, and open the formula for the new column.  
  7. Paste the prediction formula into the formula for the new column
  8. Create another new column and name it Residual
  9. Apply a formula which is the Response column minus the Predicted column.  
Jim

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