Indonesia is a fairly good e-commerce growth market from year to year. Since 2014, it is known that online sales in Indonesia have reached US $ 1.1 billion. The Central Statistics Agency (BPS) states that the Indonesian e-commerce industry in the last years has continued to increase by 17 percent with a total e-commerce business reaching 26.2 million units. In the last 4 years, e-commerce in Indonesia has increased to reach 500 percent. The e-commerce phenomenon that continues to grow rapidly in Indonesia is online shopping sites. The rapid development has resulted in more and more competitors that the online shopping site has to face. In online shopping sites that affect success and profitability is consumer repurchase intention.
Multivariate Adaptive Regression Splines (MARS) merupakan salah satu metode statistik yang menggunakan pendekatan regresi nonparametrik. Regresi nonparametrik digunakan apabila tidak terdapat informasi tentang bentuk fungsi dan tidak ada pola hubungan antara variabel dependen dengan variabel independen. Pada penelitian ini metode MARS diaplikasikan pada data tingkat kemiskinan di Provinsi Sumatera Barat. Unit observasi pada penelitian ini adalah 19 Kabupaten/Kota di Provinsi Sumatera Barat. Hasil penelitian menunjukkan bahwa model MARS terbaik adalah dengan menggunakan Basis Fungsi (BF) = 18, Maksimum Interaksi (MI) = 2, dan Minimum Observasi (MO) = 3 dengan GCV yang dihasilkan sebesar 0,001 dan nilai R2 sebesar 99,99%. Variabel independen yang memberikan kontribusi terhadap tingkat kemiskinan pada model terbaik secara berturut-turut adalah Tingkat Partisipasi Angkatan Kerja (X3) sebesar 100%, Jumlah Puskesmas (X5) sebesar 55,5%, Angka Harapan Hidup (X4) sebesar 45%, Rumah Tangga yang Menempati Rumah dengan Status Tidak Milik Sendiri (X6) sebesar 28,6%, dan Angka Partisipasi Sekolah (X1) sebesar 19,5%.Kata Kunci: Kemiskinan, MARS, Regresi Nonparametrik
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