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Results tagged with residuals
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user 235563
The residuals of a model are the actual values minus the predicted values. Many statistical models make assumptions about the error, which is estimated by the residuals.
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residual plot and non linearity
I was taught that linearity assumption in linear model can be checked by using the residuals plot. If there is a pattern then the assumption is most likely violated. …
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Rationale for fitted vs residuals plot
Why does examining fitted vs residuals plot help us determine whether there is heteroskedasticity or not? Could someone give me a detailed theoretical rationale for this test? … Does the randomness of residuals around the horizontal line y = 0 guarantee homoskedasticity, or does it just support the presence of it? …
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