“…The coefficient of determination (R²) essentially measures the extent of the model's ability to explain the variables of dependent variables Suriadi et al, 2015;Syahyunan et al, 2017;Sirojuzilam et al, 2017;Sihombing et al, 2017;Tarmizi et al, 2016Tarmizi et al, , 2017Yahya et al, 2017;Sari et al, 2018;Sadalia et al, 2018;Eriadi et al, 2018;.…”