why is student t used instead of normal what model is used to model volatility why should student t be used instead of normal when should agarch be used why does the average p value drop does student t outperform the normal distribution for garch when is standardized squared residuals decreased using student-t instead of normal distribution what is a drop in standardised squared residuals when using jarque bera? when using student t in r do standardised squared residuals decrease or increase? what is the normal distribution of jarque bera when using studentt in r what is the mse value why does student t model fail why does the student t test fail why does the jarque bera test fail why is student t used as a normal distribution in r when calculating range of standardised squared residuals how to compare the average p value to standard mse of student-t how to reduce p value jarque what is the difference between normal and student-t when jarque bera test is used