We've got a non-linear model, which has an error: heteroskedasticity (and maybe others)
Since there was a publication of the model's formula already, I'm in a panic that the prediction of the model is wrong because heteroskedasticity often has a value on the t-values and thus on the parameters.
Your task is to figure out:
1. What effect heteroscedasticity has on the model,
2. whether the model still has further validity and
3. if and how heteroscedasticity can be prevented or fixed and if it needs to be fixed at all.
Part of the job is to write an assessment of the model's defectiveness in the form of a report.
The original analysis was done in SPSS, but it's not needed for the analysis. However, I can provide the input data, formula, syntax, and result.
19 freelancere byder i gennemsnit €137 timen for dette job
I have ph. D in statistics with vast experience in studying data and running statistical analysis. I can help you eleminate hereroscadasticty issue.
I am scientist and familiar with regression problems. I would be happy to analyze heteroskedastic effects on your model. My work will be quantitatively well established. Kindly looking for your answer, A. Tounsi