Puspitasari, M. et al. 2025. A Simulation Study of Interval Estimation in Nonparametric Regression Using the Truncated Spline Estimator. Mandalika Mathematics and Educations Journal. 7, 3 (Sep. 2025), 1457–1468. DOI:https://doi.org/10.29303/jm.v7i3.9625.