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All Journal Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Sang Pencerah: Jurnal Ilmiah Universitas Muhammadiyah Buton MES: Journal of Mathematics Education and Science JURNAL PEMBELAJARAN DAN MATEMATIKA SIGMA (JPMS) BERNAS: Jurnal Pengabdian Kepada Masyarakat JURNAL PENDIDIKAN SAINS SOSIAL DAN AGAMA JagoMIPA: Jurnal Pendidikan Matematika dan IPA Dharmas Education Journal (DE_Journal) Jurnal Kajian Ilmu Pendidikan (JKIP) PIJAR: Jurnal Pendidikan dan Pengajaran Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Innovative: Journal Of Social Science Research Jurnal Teknik Mesin UDA SUBSERVE: Community Service and Empowerment Journal Revorma: Jurnal Pendidikan dan Pemikiran Jurnal Pengabdian Multidisiplin Indonesia Jurnal Ilmu Sosial dan Humaniora SAMBARA: Jurnal Pengabdian Kepada Masyarakat
Rani Farida Sinaga
Universitas HKBP Nomensen Medan
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Analysis of Critical Thinking Skills in Decision Making with R Project in Mathematical Statistics Course Rani Farida Sinaga; Lolyta Damora Simbolon; Efron Manik; Sofy Kristiani Manalu
Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Vol. 6 No. 1 (2026): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/panthera.v6i1.1122

Abstract

This study aims to analyze how the use of R Project Software in mathematical statistics courses can contribute to improving students' critical thinking skills, especially in the context of data-based decision making. Indicators of critical thinking in decision making with R Project: 1) interpretation (can write what is known and asked in the question clearly or identify the problem correctly); 2) analysis (can write what must be done in solving the problem); 3) inference (can draw conclusions from what is asked logically and visualize the results); 4) evaluation (can write down the solution to the problem and build a model to evaluate alternatives); and 5) explanation (can provide reasons for the conclusions drawn). The research method uses a descriptive quantitative approach. This research has a population of 80 students with a sample size of 40 students using non-probability sampling with the purposive sampling technique. By using a significance level of 5% and a df value of nk = 40 - 2 = 38, the ttable value is 1.686. The tcount value of 3.383 exceeds the ttable value of 1.686, indicating that the null hypothesis is rejected at a 95% confidence level. And, keep the abstract concise by stating only the conclusion of the statistical test (significant positive effect). Thus, R Project can be recommended as a natural analysis tool for learning mathematical statistics.
PENGARUH PEMBELAJARAN MATEMATIKA BERBASIS MULTIMEDIA EDPUZZLE TERHADAP KEPERCAYAAN DIRI DAN HASIL BELAJAR SISWA PADA MATERI STATISTIKA KELAS VIII Mitha Lestari Sihombing; Dame Ifa Sihombing; Rani Farida Sinaga
Dharmas Education Journal (DE_Journal) Vol 4 No 3 (2024): DE_Journal
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Univesitas Dharmas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56667/de_journal.v4i3.1188

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh pembelajaran matematika berbasis multimedia Edpuzzle terhadap kepercayaan diri dan hasil belajar siswa kelas VIII pada materi statistika di SMP Negeri 18 Medan tahun ajaran 2024/2025. Penelitian ini menggunakan metode kuantitatif dengan desain eksperimen semu tipe one-shot case study. Populasi dalam penelitian ini adalah seluruh siswa kelas VIII SMP Negeri 18 Medan T.A 2024/2025. Dengan teknik probability sampling, sampel penelitian yaitu kelas VIII-9 dan VIII-10. Instrumen yang digunakan adalah angket serta soal tes bentuk uraian yang telah dilakukan uji validasi instrumen. Analisis data dilakukan dengan analisis jalur. Hasil penelitian ini menunjukkan bahwa : 1)ada pengaruh signifikan pembelajaran matematika berbasis multimedia Edpuzzle terhadap kepercayaan diri siswa pada materi statistika (0,000<0,005), 2)ada pengaruh signifikan pembelajaran matematika berbasis multimedia Edpuzzle terhadap hasil belajar siswa pada materi statistika (0,000<0,05), 3)ada pengaruh signifikan kepercayaan diri terhadap hasil belajar siswa pada materi statistika (0,000<0,05), 4)tidak ada pengaruh signifikan pembelajaran matematika berbasis multimedia  Edpuzzle terhadap hasil belajar siswa melalui kepercayaan diri pada materi statistika (0,720>0,1782, hal ini menunjukkan bahwa kepercayaan diri tidak berperan sebagai mediator dalam hubungan antara pembelajaran matematika berbasis multimedia Edpuzzle dengan hasil belajar.
The Influence of Deep Learning -Based Problem Solving Models on Ability Solution Problem Mathematical Students on Questions Statistics Material Story in Class X Putri Engjelina Isnawati Manullang; Rani Farida Sinaga; Samuel Juliardi Sinaga
Jurnal Ilmu Sosial dan Humaniora Vol. 3 No. 4 (2025): Oktober
Publisher : CV Putra Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58540/isihumor.v3i4.2193

Abstract

This study aims to determine the effect of the deep learning-based problem solving model on students' mathematical problem-solving ability in statistics story problems in class X of SMA Negeri 12 Medan. The research used a Quasi-Experimental method with a population of all grade X students consisting of 10 classes. The sample was determined through cluster random sampling, resulting in class X-E2 as the experimental class and class X-E4 as the control class. Data were collected using a mathematical problem-solving ability test. Data analysis using the Liliefors normality test, F homogeneity test, and t-test showed a significant difference between the pre-test and post-test scores of problem-solving ability in both classes, with a sig. (P(T<=t) two-tail) value of 0.0076 < 0.05. The average post-test score of the experimental class reached 67.3000, while the control class was 46.0333, indicating that students' mathematical problem-solving ability was in the high category. Based on the calculation of Effect Size (Cohen’s D), a value of 3.539734 was obtained, which means that using the problem-solving model based on deep learning on students' mathematical problem-solving abilities has a high influence on improving students' ability to solve mathematical problems
Co-Authors Adi Suarman Situmorang, Adi Suarman Agusmanto Hutauruk Arthur Simanjuntak Betauli Wati Siagian Betesda Lumban Gaol Br Purba, Friska Yanti Br. Tambun, Dinaria Carolina Carolina, Carolina dame ifa sihombing Dame Ifa Sihombing Efron Manik Ginting, Audy Christie Putri Br Girsang, Rifka Sapriani Gultom, Kristina Gultom, Sanggam P Gultom, Sanggam P. Hutasoit, Julinca Hutasoit, Kristi Kondios Meidarlin Pasaribu Lastri, Lastri Lena Rosdiana Pangaribuan Lena Rosdiana Pangaribuan Lia Deniati Manurung Lolyta Damora Simbolon Lumbanraja, Devina Oktavia Malau, Farmin Malau, Vemmy Rebecca Rohana Marpaung, Rince Mitha Lestari Sihombing Napitupulu, Cherry Carolina Nurlina Panggabean, Marissa Nurianna Panjaitan, Ike Theresia Panjaitan, Ike Theresia Handayani Br Panjaitan, Simon M. Pardosi, Santa ceacilia Purba, Switamy A. Putri Engjelina Isnawati Manullang Revol A. Sibarani Rosdiana Rajagukguk Ruth Mayasari Simanjuntak Sahat Taruli Siahaan Samuel Juliardi Sinaga Saragih, Renita Sari, Nova Yunita Sauduran, Golda Novatrasio Siahaan, Lasriama Elsa Widiyanti Siahaan, Lasriama Widiyanti Sihite, Tionopita Silalahi, Elsa Silalahi, Putra Aksido Simbolon, Lolyta Damora Sinaga, Christa Vonni R. Sinaga, Lolyta D. Sirait, Debora Sirait, Debora E. Situmorang, Dina Evelin Situmorang, Mahanda Dinaria Sofy Kristiani Manalu Sormin, David Frendy Tambunan, Hardi Tutiarny Naibaho