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Clustering Minimum Wages By Regency/City In Central Java Using The K-Means Clustering Method Nurrohman, Setia; Sugandha, Agus; Prabowo, Agung; Mashuri, Mashuri
Jurnal Matematika Integratif Vol 22, No 1: April 2026
Publisher : Department of Matematics, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jmi.v22.n1.70220.19-36

Abstract

The Regency/City Minimum Wage (UMK) is an important indicator in describing the level of welfare and economic activity in a region. Central Java Province, which consists of 35 regencies/cities, has quite large variations in UMK between regions. This study aims to map the grouping of regencies/cities in Central Java based on the UMK level from 2021 to 2024. The analysis was conducted using the K-Means Clustering method with the help of Microsoft Excel and RStudio software through the stages of data standardization, the Kaiser Meyer Olkin test, determining the number of clusters using the Elbow method, and an iteration process to obtain optimal results. Based on the analysis results, it was obtained that the regencies/cities in Central Java can be divided into three clusters: cluster 1 consisting of 15 regions with a low UMK level, cluster 2 consisting of 14 regions with a medium UMK level, and cluster 3 consisting of 4 regions with a high UMK level. Most areas of Central Java are included in the low and medium UMK categories, while only a small number of regions are classified as having a high UMK. These results indicate the existence of welfare disparities between regions, so it is hoped that they can be a basis for the government in formulating policies to improve welfare and economic equality in Central Java Province. Keywords: Minimum Wage, Central Java, Disparitis, K-Means Clustering
Comparative Analysis of Fuzzy Mamdani Method and Fuzzy Sugeno Method in Predicting Household Electricity Consumption Costs Zahra, Luthfia; Mashuri, Mashuri
Indonesian Journal of Applied Statistics Vol 8, No 2 (2025)
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijas.v8i2.103436

Abstract

Electricity has become an essential part of our daily lives. As technology has rapidly developed, many modern activities and devices have become highly dependent on electricity. The more electricity that is used, the higher the monthly cost. This cost is influenced by usage patterns and various uncertain factors. Fuzzy logic is one approach that can be used in decision support systems in the face of uncertainty like this. This study aims to apply the Mamdani and Sugeno fuzzy methods based on house building area, number of electronic devices, number of family members, and income to determine which method more accurately predicts household electricity consumption costs based on the mean absolute percentage error (MAPE) value. Data for this study were obtained through questionnaires and interviews with residents of Margorejo Village. Data processing yielded a MAPE value of 12.3% for the Mamdani method and a MAPE value of 9.9% for the Sugeno method. Based on these results, the MAPE value for the Sugeno method is smaller than that for the Mamdani method. Therefore, it can be concluded that the Sugeno method is more accurate for predicting household electricity consumption costs in Margorejo Village.Keywords: Mamdani Method, Sugeno Method, MAPE.
Peningkatan Pengetahuan Siswa Kelas 5 SD Tentang Sifat-Sifat Cahaya Melalui Metode Pembelajaran Inkuiri Terbimbing Dengan Model Demonstrasi Dan Percobaan Sederhana Mashuri, Mashuri; Budiyanto, Muhammad; Rokhmaniyah, Rokhmaniyah; Rumentah, Endah
Social, Humanities, and Educational Studies (SHES): Conference Series Vol 7, No 4 (2024): Social, Humanities, and Educational Studies (SHEs): Conference Series
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/shes.v7i4.97218

Abstract

Pengetahuan siswa kelas 5 SD Angkasa Lanud Adi Soemarmo mengenai sifat-sifat cahaya masih tergolong rendah, ditunjukkan oleh hasil belajar yang belum mencapai Kriteria Ketuntasan Minimal (KKM). Kondisi ini memerlukan upaya perbaikan melalui metode pembelajaran yang efektif dan interaktif. Penelitian ini bertujuan untuk meningkatkan pengetahuan siswa tentang sifat-sifat cahaya melalui penerapan metode pembelajaran inkuiri terbimbing dengan model demonstrasi dan percobaan sederhana. Penelitian Tindakan Kelas (PTK) yang dilaksanakan dalam tiga tahap: pra-siklus, siklus I, dan siklus II. Subjek penelitian adalah 14 siswa. Setiap siklus terdiri dari empat tahap yaitu perencanaan, pelaksanaan tindakan, observasi, dan refleksi. Hasil penelitian menunjukkan adanya peningkatan. Pada tahap pra-siklus, hanya 14,3%. Setelah penerapan metode inkuiri terbimbing pada siklus I, persentase siswa yang mencapai KKM meningkat menjadi 50%. Peningkatan lebih lanjut terjadi pada siklus II, yaitu 85,7%. Simpulan dari penelitian ini adalah bahwa penerapan metode pembelajaran inkuiri terbimbing dengan model demonstrasi dan percobaan sederhana efektif dalam meningkatkan pengetahuan siswa.
Co-Authors A.B.U, M. Andriyan Rengga Abdillah, Achlish Abdul Hadi Abdul Kamaruddin Abdul Latif Abdul Rivai Aditiya, Popi Afdal Afdal, Afdal Afila, Lala Afrizal, John Agung Prabowo Agung Wibowo, Rahmat Agus Rubiyanto Agus Sugandha Agus Wayan Yulianto Agussatriana Ahmad Muklason Ainal Mardhiah, Ainal Mardhiah Akbar Eisenring, Moh. Abraham Al Husaini, Muhd Arief Al Husaini, Muhd. Arief Al-Kadafi, Muammar Alfianti Tapala, Alma Ali Alhadar Amidi Amidi, Amidi Amin Pujiati Amin Suyitno Aminah Aminah Aminah Suriaman Amozhita, Kintan Khana Ana Febrianti AD Anarkis, Bunga Tirai Anas Tahir Andania, Ana Andi Amitya Resty Dwiyanti Andi Arham Adam Anggraeni, Rima Anggreni, Afrillia Anintya, Yolanda Astrid Anita Syam Anugrawati, Anugrawati Aranda, Viren Lolita Arief Agoestanto Arief Setiawan Arif Hidayat Ariska, Ariska Arpiani, Made Rani Asferizal, Ferial Ashsubli, M. Assyfa, Nadia Salma Nazwa Astuti, Dwi Putri Puji Astuti, Fira Athira, Dini Ayudia Hardiyani Kiranaratri Azahra, Sarmila Aziz, Ahmad Rijal Baehaqi Bagusta, Deri Baharsyah, Bastomi Ballani, Simran Bambang Sampurno, Bambang Bambang Setiawan Bambang Wahyu Susanto Barnawi, Barnawi Betharina, Nudyan Budi Budi Budi Pratikno, Budi Budiyanto, Muhammad Cahyono, Yohana Chatarina Umbul Wahyuni Chotim, Moch Dani Setiawan Darianto, Darianto Darmawan Darmawan Darmawan, Andri Darminto . Desrin Lebagi Dewi Hastuty Dewi, Anjar Kusuma Dito, Aliffia Putri Djoko Susanto Dona Marisa, Dona Dudung Hidayat Dukhi Safaraz, Muhammad Dwijanto Dwijanto, Dwijanto E. Sulastri Eddy Widiyono Eisenring, Moh. Abraham Akbar Eko Suhartono Eliza, Mutia Emi Pujiastuti Erlindawati, Erlindawati Eskalalita, Eskalalita Eunika, Astrid Fabroyir, Hadziq Fadhilah Zamzam Fadli Fadli Fajariyah, Nurul Inayah Fajria, Nur Fathorroji, Fathorroji Fatmawati, Erna Faturahman, Dadan Taufik Fauzan Azima, Fauzan Azima Fauziah, Nadhilah Febrianti, Helma Fikri, Asyrul Fitri, Farhadia Syawala Fitria Amalia, Fitria Fitriani, Devia Fitriyani, Eka Retna Friansa, Koko Fuad Jaya Miharja Fujiati ., Fujiati FX Hendriyono Gatut Yudoyono Gontjang Prajitno Gustianda, Soma Guswanto, Bambang Hendriya Hafidh, Muhammad Hakim, Muhammad Syaiful Haku, Devitriani AR. Hamdani Basri Hanum, Fauziah Harapandi, Harapandi Hardi Suyitno Hasibuan, Hotmida R. Hastini, Hastini Hendro Nurhadi Hidayat, Alfatah Hijriah, Muqni Aini Hilda Listiawati Husaini, Muhd. Arief Al Husamah Husamah Husna, Hanna Dwi Aprilia Husni Thamrin Ida Ayu Putu Sri Widnyani Iffatin Nur Iin Hindun Indah, Zainatuts Tsaniyah Indraswari, Rarasmaya Indriana Noor Istiqomah Irmawati Irmawati Irwan Setyowidodo, Bagus Jaya Santosa Irwandi Yusuf Iskandar Iskandar Isnaeni, Ari Isnaini Isnaini Rosyida, Isnaini Isti Hidayah Ita Ulfin Iwan Aflanie Iwan Yahya Jajang Jajang Jamiluddin, Jamiluddin Jandriyani, Rina Jerfikanasa Murda, Gung Bagus Johan, Arno Joy Fredi Batti Joy Fredy Batti Jubaedi, Jubaedi Junaidi Junaidi Jurair Patunrangi Kamarrudin, Abd. Kamaruddin, Abd Kamila, Hayatun Nufus Kanserini, Julia Kartini Mansyur Karunia Bakti, Indah Kasful Anwar Khaira, Wanty khairul fuad Khasanah, Diah Laila Khusnul, Khusnul Kiranaratri, Ayudia Hardiayani Klodia, Sindi Konder Manurung Kristina Wijayanti Kurniasih, Laely Kurniati, Tien Kurniawan, Muhammad Rizcky Kusuma Dewi, Anjar Kuswoyo, Indra Labaso, Eko R. Lailatul Qadariyah Laili Dwi Annisa Laili Nur Azizah Lalu Agus Satriawan, Lalu Agus latif Abdul, latif Lia Amelia Lila Yuwana Lilis Handayani Lina, Anis Nata Linda Silvia, Linda Lisda Hayatie, Lisda Listiana Listiana Liza Rusdiyana Lukman Hakim M Gilang Indra Mardika M. Arief Bustomi M. Husni Maricar M. Ridho Ulya M. Said, Mawardin Ma'arif, Syamsul Maf’ulah, Maf’ulah Mahanani, Eli Pri Mahdum, Muhammad Yusuf Maisah Maisah Malinda, Nur Mandalika, Leni Manik, Tetti Novalina Mardhotilah, Jundi Marfungah, Fitri Ferianti Mariani Maulana, Mirza Much Mawardin, Mawardin Mbani , Nurmakfira Mehir, Saefuddaulah Meynaksi, Astrid Miftahul Jannah Miftahurrahmat, Miftahurrahmat Mira Dharma Susilawaty Mochtar Marhum Morian Saspriatnadi Muhajir Muhajir, Muhajir Muhammad Ikbal Muhammad Kasan Muhammad Kharis Muhammad Ngizzul Muttaqin Muhammad Rapita Kun Panuluh Muhammad Zainuri Muhammad Zuhair Zahid, Muhammad Zuhair Muhtadi, Nafsah Mujani, Sahril Mukhtar Latif Mukrim, Mukrim Mulyono Mulyono Museliza, Virna Mutamassikin, Mutamassikin Muthmainah, Noor Muzdhalifah, Suci Firly Mz, Irawan Fahrudin NA, Bustami Nabila, Putri Nadrun, Nadrun Natasya, Puspa Nggufron, Nanang Nirmala Nirmalasari, Fadhilah Ayu Nirwana, Nirwana Nitoviani, Nindy Dwi Nofitasari, Lusi Nona Dince, Maria Noor, Dedy Zulhidayat Novianto, Saihul Nugroho, Ahmad Munif Nugroho, Deni Nur Aini Rakhmawati Nur Annisa, Gita Oktarina Nurdiana Nurdiana Nurjanah Ismail Nurlaili, Rodhotul Evita Nurrohman, Setia Nurrul Helen Nurul Adha, Gita nurul latifah Nurul Mustaqimmah, Nurul Nurwidodo, Nurwidodo Oktaviani, Rinta Oktayani, Dewi Olivia, Zetrin Oriana Paramita Dewi Patmasari, Andi Perdana Putera, Gusti Muhammad Pradito, Syaifullah Akbar Pramadita, Anjar Aditya Prasetiyo, Agustaf Prasetyo, Verly Zuli Pratama, Aditya Bayu Pratama, Danang Adi priyoto, priyoto Purwanti, Eka Rela Pradana Puspita Sari Puspitasari, Nurrisma Putra, Muhammad Hakiem Sedo Putri Tuah Susila, Dewi Putri, Alviana Pratama Putri, Malfa Liya Putriaji Hendikawati Radhiyullah Armi Rahadiantino, Lienggar Rahardjoni, Amri Setiawan Rahman, Hafid Rahmatang Rahman Rahmi, Sulistiowati Nur Ramadhan, Dela Putri Intan Ramadhina, Retno Ramadona, Aulia Realita Realita Resty Dwiyanti, Andi Amytia Rieska, Rieska Rijal, Muhammad Rina Reorita Riski Salim Rismauliani, Fauziah Rita, Ferry Riwibowo, Nola Riza Arifudin Rochmad - rofiqoh rofiqoh Rohmah, Naila Zulfatur Rokhmaniyah Rokhmaniyah, Rokhmaniyah Romdany, Fany Eka Rondhianto Rondhianto Rostianti, Rostianti Rumentah, Endah Rusdi Rusdi Safitri, Laksita Aji Salsabila, Unik Hanifah Santoso, Tanto Budi Saputra, Moh. Firman Amardani Sari, Idcha Rahma Sasmita, Ula Dwi Satria Kamal, Mulky Satria, Erik Sawal, An-nafi Sa’adah, Waqhidatus Scolastika Mariani Sedo Putra, Muhammad Hakiem Septiana, Meli Setiawan Assegaf Setiawan, Muhammad Israf Setiyo Gunawan Setyaningrum, Rosina Retno Setyoningati, Putri Ayu Shaliha, Shaliha Sibaweh, Imam Sigit Widodo Silviana W, Ika Silviani, Siti Aminah Simon Sadok Siregar, Simon Sadok Siti Chalimah Siti Rahmah Nurshiami, Siti Rahmah Sitti Rahma, Sitti Slamet Riyadi Soejoko, Edy Sri Astuti A. Samad Sri Darmadi, Nanang Sri Djuniati Sri Haryati Sri Wahyuni Sriati Usman St. Budi Waluya Suhari Suhariyanto Suhariyanto Suhito Suhito Sukestiyarno Sukestiyarno Sukma Adjie, Galih Sulistiawati, Dinda Sumantri, Lilis Sumarjan Sumarjan, Sumarjan Sunanto Sunanto Supriyanti, Erni Suriana Suriana Suryani, Maylina Dwi Suryani, R. Lisa Susilo Indrawati Susiyati, Susiyati Syahrul Munir Syam, Anita Syamsiar, Syamsiar Syarif, Muhammad Ilham Al Ghiffari Taufik Hidayatullah, Taufik Triyani Triyani Ulpah, Mariya Umaira, Siti Utami, Wahyu Nur Veronica, Rahayu Budhiati Wafi, Abdurrahman Wahyu Hidayat Wahyu Tri Sutrisno Wahyudin Wahyudin Warda, Asa Kuntifatin Wardhani, Erna Pramidya Wicaksono, Dedi Wicaksono, Wahyu Budi Widyawati, Kharisa Wijayanti, Marwah Daud Wiratama, Dadang Yosopranata, Desinta Yuliani, Selvia Yuliansyah, Asri Yusnimar Sahan Yusri, Yusnimar Zaenal Abidin Zaenuri Mastur Zahra, Dela Zahra, Luthfia Zainal Abidin Zakiyah, Yayah