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My statistics class uses TI 84's to graph a residuals plot.. but I'm finding it difficult to figure out how to do it on my HP50g.
I'm currently using the matrix writer to do linear fits.
From what I understand, I should make a new column in the matrix writer that has COL2 - (equation of line of best fit). How would I do this? Is there a better way to do residual plots?
When I understand you well you want to add a third column to ΣDAT which is
COL2-f(COL1) where f(COL1) is the function of the regression line applied to all elements of column 1.
I found a smart program in another forum:
It is the last message.
With a small modification this is:
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