topic Residuals analysis in Discussions

Residuals analysis

msilva92 — Thu, 20 Jun 2024 09:50:52 GMT

Hi,

I'm performing regression analysis of data and determining the residuals. When inserting the data by order of analysis and by random order, I get different residuals values. I checked if the data is correct and it is. Does the order of data affects the residuals calculations? And if does, why?

Many thanks!

Re: Residuals analysis

Ressel — Thu, 20 Jun 2024 10:27:36 GMT

Could you share an example table with the analyses stored as table scripts?

Re: Residuals analysis

Mark_Bailey — Thu, 20 Jun 2024 12:21:42 GMT

No, the order of the rows (observations) does not determine any of the regression results. Can you reproduce this result? Have you started over and made sure that the only change is the order of the rows? You did not exclude rows in one case but not the other?

Example: Big Class data table, Bivariate platform, regress :weight by :height with simple linear regression, plot residuals.

Original row order.

Randomly re-ordered rows.