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18 April, 19:21

To determine the aptness of the model, which of the following would most likely be performed?

A. Check to see whether the residuals have a constant variance

B. Determine whether the residuals are normally distributed

C. Check to determine whether the regression model meets the assumption of linearity

D. All of the above

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  1. 18 April, 21:19
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    D. All of the above

    Step-by-step explanation:

    Linear regression models relate to some assumptions about the distribution of error terms. If they are violated violently, the model is not suitable for drawing conclusions. Therefore, it is important to consider the suitability of the model for information before further analysis can be performed based on this model.

    The fit of the model is related to the remaining behavior complying with the basic assumptions for error values in the model. When a regression model is constructed from a series of data, it should be shown that the model responds to the standard statistical assumptions of the linear model because of conducting inference. Residual analysis is an effective tool to investigate hypotheses. This method is used to test the following statistical assumptions for a simple linear regression model:

    -Regression function is linear in parameters,

    -Error conditions have constant variance,

    -Error conditions are normally distributed,

    -Error conditions are independent.

    If no statistical hypothesis of the model is fulfilled, the model is not suitable for data. The fourth hypothesis (independence of error conditions) relates to the regulation of time series data. It is now used some simple graphical methods to analyze analysis, the feasibility of a model, and some formal statistical tests. In addition, when a model fails to meet these assumptions, some data changes may be made to ensure that the assumptions are reasonable for the modified model.
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