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Nindya Wulandari
Universitas Riau, Pekanbaru, Indonesia
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Modeling East Java Province Poverty Cases Using Birespon Truncted Spline Regression Rizka Amalia Putri; Nindya Wulandari; Erlyne Nadhilah Widyaningrum; Morina A. Fathan; Nur Rezky Safitriani
Indonesian Journal of Applied Statistics Vol 8, No 1 (2025)
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijas.v8i1.100915

Abstract

An analytical method for determining the relationship between predictor and response variables is regression. For data that shows unidentified patterns, nonparametric regression is a suitable data analysis technique. A nonparametric regression technique is the truncated spline. Due to the widespread use of truncated spline with a single response variable, this study employs biresponse truncated spline, which uses two response variables to produce a better model than single-response modeling. The purpose of this study is to obtain the best model and to identify which variables influence the poverty case in East Java Province using biresponse truncated spline regression. The best knot points were chosen for this investigation using Generalized Cross Validation (GCV). With three knot points and a model goodness of fit () of 95.83%, GCV gives the best modeling results. Applying this model to the East Java Province case of poverty using data on the poverty depth index and the percentage of the population living in poverty in 2023 reveals that the Labor Force Participation Rate (TPAK), Average Years of Schooling (RLS), and Open Unemployment Rate (TPT) all have a significant effect.Keywords: biresponse truncated spline; nonparametric regression; poverty
Co-Authors Afra Nazhirah Ardianti, Anggi Auliya, Rizka Avelia, Ririn Azzahra Putri Rialdi Bangun, Evelyn Theodora Br Erfiani Erfiani Erlyne Nadhilah Widyaningrum Fadel Nugraha Fawrin, Heralda Febrianto, Yudha Fentika, Winda Halim, Michelle Graciella Jacinta Husnah, Mirdatul Irzaman, Irzaman Islami, Nurul Hidayah Lastri Anggi Fani Mahendwiani, Ihza Maisarah, Dina Maryanto, Luna Salwa Putri Morina A. Fathan Muharram, Maulana Nabilla Shafira Nasfianti, Iis Novia, Siti Arita Nur Rezky Safitriani Rahma, Puja Dwi Rahmadeni Rahmadeni Rahmat Hidayat Raudah, Sya'rani Rizka Amalia Putri Safniyeti Safniyeti, Safniyeti Sihotang, Naomi Chiko Putri Silalahi, Hiskia Quintris Br Sinaga, Irfan Siti Arita Novia Teguh Sujana Utami Dyah Syafitri Yanti Andriyani Yasmine, Amanda Alivio