“Improve the Fitment Quality of the Binary Response Model With Practical Application to Those Infected With the Covid-19 Epidemic”. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), vol. 52, no. 2, Dec. 2022, pp. 20-31, https://doi.org/10.55562/jrucs.v52i2.539.