what is the hausman test used for which model is robust? what r model is a greufeld what model is used for serial correlation how does a hausman test work what is a serial correlation what is hausman test for mwe what is the test for serial correlation what is the test for serial correlation in panel model? what is the difference between a serial correlation and a robust model? is hausman a statistical test which statistic is used to find if the correlation of model and r is robust? what is the hausman test which model is more accurate in measuring serial correlation or robustness what is the hausman test what is the difference between a random effects model and a finite results model hausman test of serial correlation what is the test for serial correlation what is the hausman test for serial correlation what is the hausman test for a serial correlation?