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# I made this normal probability plot from residuals. Would this graph show the data is not normal? I made this residual plot in minitab. How do I

I made this normal probability plot from residuals. Would this graph show the data is not normal?

I made this residual plot in minitab. How do I describe the heteroscedacity of the data?

I created this regression model on minitab. How do I tell if it is significant, good and the percentage of variability that is explained by the graph?

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• Okay thank you! I am still a bit confused on certain areas. So the first graph (the one with the S pattern) shows normality? And for the second graph, my prof. said that that homoscedacity residual graphs have no clear pattern. This graph looks like it has a pattern of getting bigger to smaller (like butterfly wings).
• JenkinsM123
• Apr 02, 2019 at 11:41am

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