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All Journal Journal of Mathematics Education and Application (JMEA) MURHUM : JURNAL PENDIDIKAN ANAK USIA DINI
Yastri, Yastri
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Education Languange, Linguistic, Communication & Media Mathematics Other

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Comparison of Newton Raphson Method and Ridge Method In Probit Regression Parameter Estimation Yastri, Yastri; Pane, Rahmawati
JMEA : Journal of Mathematics Education and Application Vol 2, No 3 (2023): Oktober
Publisher : JMEA : Journal of Mathematics Education and Application

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/jmea.v2i3.13327

Abstract

Probit regression model is a non-linear model used in the process of analyzing the relationship between a response variable that has categorical properties. The problem that is very often experienced in probit regression when the predictor variable consists of one or more is that there is a very high correlation between predictor variables called multicollinearity. To overcome this, the Newton Raphson method and the Rigde method are used. So this research was conducted to compare the Newton Raphson method and the Ridge method in the estimation of the Probit Regression parameter. The data used in this research is 1000 data generation that contains multicollinearity. Based on this research, the estimated mean square error of the Probit Regression model using the Newton Raphson method is 0.488. The estimation result of the mean square error of the Probit Regression model using the Ridge method is 0.488. The results of this study indicate that the estimation of the Probit Regression parameter using the Newton Raphson method is as good as the Ridge method. This can be seen from the estimated value of MSE using the Newton Raphson method and the Ridge method. This can happen due to the small value of the langrage multiplier obtained, so it does not have an impact on the model obtained.
Peran Guru dalam Meningkatkan Karakter Kedisiplinan pada Anak Usia Dini Yastri, Yastri; Fauziyah, Nur
Murhum : Jurnal Pendidikan Anak Usia Dini Vol. 6 No. 2 (2025): Desember
Publisher : Perkumpulan Pengelola Jurnal (PPJ) PAUD Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37985/murhum.v6i2.1592

Abstract

Penelitian ini bertujuan untuk mendeskripsikan peran guru dalam meningkatkan karakter kedisiplinan anak usia dini di KB Mambaul’ulum, Desa Luwang, Kecamatan Gatak, Kabupaten Sukoharjo. Metode penelitian yang digunakan adalah kualitatif deskriptif dengan teknik pengumpulan data melalui observasi, wawancara, dan dokumentasi. Subjek penelitian terdiri atas tiga informan utama, yaitu kepala sekolah dan dua guru kelas, serta 16 anak didik sebagai peserta observasi. Analisis data dilakukan melalui reduksi data, penyajian data, dan penarikan kesimpulan dengan pendekatan analisis interaktif Miles dan Huberman. Hasil penelitian menunjukkan bahwa guru berperan sebagai teladan, pembimbing, fasilitator, demonstrator, dan evaluator dalam menanamkan nilai-nilai kedisiplinan anak, seperti datang tepat waktu, berpakaian rapi, berdoa sebelum belajar, mencuci tangan, dan membereskan mainan setelah bermain. Konsistensi dan keteladanan guru berpengaruh nyata terhadap perubahan perilaku anak menuju kebiasaan disiplin. Kontribusi utama penelitian ini menegaskan bahwa peran aktif guru melalui pembiasaan positif dan kerja sama dengan orang tua berkontribusi konkret dalam membentuk perilaku disiplin yang berkelanjutan pada anak usia dini.
Co-Authors Fauziyah, Nur Pane, Rahmawati