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Journal : Educational Journal

Konsep Reliabilitas dalam Penelitian dan Teknik Pengujianya Saidah, Nur; Mawaddah, Nur; Hidayah, Nur; Zulpan, Zulpan; Husein, Ahmad; Arianto, Arianto
Educational Journal Vol. 1 No. 3 (2026): FEBRUARI-APRIL
Publisher : Indo Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63822/9f7vte41

Abstract

Reliability is an important part of research because it shows the extent to which an instrument is able to provide consistent results when used repeatedly. A reliable instrument is considered trustworthy and truly describes the true condition of the object being studied. Without good reliability, research data becomes difficult to account for because the results are unstable. This study uses a literature study method by examining theories and results of previous research on the concept of reliability, types of reliability, and testing techniques. The results of the study show that reliability is closely related to the stability and accuracy of a measuring instrument. Various methods such as test-retest, split-half, equivalent form, and Cronbach's Alpha can be used according to research needs. Other factors such as the number of questions, the variety of participants, and the level of difficulty also affect the size of the reliability value. By understanding the concept of reliability thoroughly, researchers can construct more consistent and reliable instruments.
Analisis Uji Regresi Linear Sederhana dalam Penelitian Pendidikan Lestari, Vina; Angriani Lubis, Rina; Hairani Tbn, Reni; Zulpan, Zulpan; Arianto, Arianto
Educational Journal Vol. 1 No. 3 (2026): FEBRUARI-APRIL
Publisher : Indo Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63822/3h3knm56

Abstract

This study aims to explore the use of simple linear regression in the educational context, particularly in evaluating the effect of a single independent variable on a single dependent variable, such as the relationship between learning motivation and students’ academic achievement. The approach adopted is a literature study by examining various scientific references, including journals, books, and research articles related to simple linear regression. The findings indicate that simple linear regression plays an important role in education for measuring, predicting, and understanding quantitative interactions between variables. This method assists educators and researchers in identifying factors that significantly influence learning outcomes and in assessing the effectiveness of information-based learning programs. Moreover, simple linear regression offers advantages such as ease of analysis, predictive capability, and flexibility in its application across diverse educational contexts. This study emphasizes that simple linear regression is a fundamental and efficient method for educational analysis and can serve as a basis for further studies using more complex statistical models.
Ukuran Pemusatan dan Penyebaran Data Rifki, Aulia; Rahimah, Siti; Arianto, Arianto; Zulpan, Zulpan
Educational Journal Vol. 1 No. 3 (2026): FEBRUARI-APRIL
Publisher : Indo Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63822/xh0kfd65

Abstract

Statistics is the science of collecting, processing, presenting, and analyzing data in order to provide meaningful information for decision-making. One of the fundamental concepts in statistics is the measure of central tendency and data dispersion. Measures of central tendency, which include mean, median, and mode, describe the central value of a data set. Meanwhile, measures of dispersion, such as range, variance, and standard deviation, are used to determine how far the data values deviate from the center. This article aims to provide a comprehensive understanding of the concepts, formulas, and applications of measures of central tendency and dispersion in the context of learning statistics. With a proper understanding, students are expected to analyze data more critically, recognize variation within a phenomenon, and connect the analysis results to real-life problems. The discussion in this paper is expected to strengthen students’ analytical skills and provide a solid foundation for studying more advanced statistical methods
Konsep Homogenitas dan Normalitas dalam Statistik serta Teknik Pengujiannya Al Fatih, Fitrah; Putri Lubis, Nabila; Nisah HSB, Khoirun; Zulpan, Zulpan; Arianto, Arianto
Educational Journal Vol. 1 No. 3 (2026): FEBRUARI-APRIL
Publisher : Indo Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63822/b98bqe88

Abstract

The assumptions of homogeneity and normality are fundamental prerequisites in parametric statistical analyses such as the t-test, ANOVA, and linear regression. Without meeting these assumptions, the results of data analysis may become invalid and lead to biased conclusions. This article aims to provide a comprehensive review of the fundamental concepts of homogeneity and normality, their importance in quantitative research, and various methods used to test them. The discussion covers definitions and the roles of homogeneity and normality in statistical tests, testing methods such as Levene’s Test and Bartlett’s Test for homogeneity, as well as Kolmogorov-Smirnov Test and Shapiro-Wilk Test for normality. The analysis also includes the interpretation of test results and an example of their application to research data. The findings indicate that a solid understanding of these basic statistical assumptions is crucial to ensure the validity and reliability of research outcomes. This article provides both theoretical and practical foundations to help researchers select and apply appropriate testing methods prior to conducting data analysis.  
Co-Authors A.A. Ketut Agung Cahyawan W Abbas, Muhammad Adnan Anugrah, Iqbal Afifah, Novita Nur Agung Dewantara Agussetiawan, Ledie Agustiana, Agustiana Agustiani, Nurling Ahmad Husein, Ahmad Akbar, A.Ali Akbar, Muh Akbar, Muh. Akhmad Qashlim, Akhmad Al Farizi, Zulham Al Fatih, Fitrah Alfia, Barkatun Nisa Alghi, Anugerah Febryan Alimuddin Unde, Alimuddin Alimuddin Unde, Andi Amal, Andi Ulfaizah Amanda, Audrey Amanda, Yoga Aminah Aminah Aminuyati Amir, Achyar Islami Amir, Muhammad Amiruddin Amiruddin Andi Alimuddin Unde, Andi Alimuddin Andi Tendean Andoyo Sastromiharjo Andriyani, Desi Angriani Lubis, Rina Anhar Salim, Muhammad Annisa Annisa Anugrah, Riswan Ahmad Anwar, Wulandari Aprilia, Amanda Rechita Putri Arif, Arif Prasetya Artiyany, Megawati Assidiq, Muhammad Aulia Rifki, Aulia Ayu Safitri Bantun, Suharsono Basri Basri Boni Saputra Bujaya, Muhammad Cahyadi Saputra Akasse crysantini paays, Vitalona Dadi Riskiono, Sampurna Danindra, Fuad Deliani, Susy Deliany, Susi Dewi Kartikasari Dian Indriani Dyah, Ratnasari Dyah. P, RR. Ratnasari Elina P, Lies Elmania, Putri Fachry Abda El Rahman Fadhilah, Aura FAHARUDIN, FAHARUDIN Fahmi, M. Khairul Faizul Candra, Iqbal Fajrun, Fajrun Fatimah Zahara, Siti Fatriana, Disya Giatman, M Gumilang, Rinaldy Gustianty, Fahra Elvy Haerani, Khuldatul Hafied Cangara, Hafied Hairani Tbn, Reni Hamdani Hamdani Hamid, Fanul Harahap, Andi Syahputra Harahap, Hotni Sari Haris Firmansyah Harmawan, Rizal Harnida Wahyuni Adda Hartati, Ani Hartini, Devi Hasidu, La Ode Abdul Fajar Hasria Hasria, Hasria Hayati, Rini Helmi, Hidayatul Hera Yanti Hermana, BP. Putra Hery Widijanto Hidayah, Tiara Hudaibah, Fadlia Dwi Iis Afrianty Ikram, Ikramullah Mahdi Indra, Agustian Indriani Indriani Irmawati Irmawati Isah Cahyani Jeanny Maria Fatimah Kamaruddin, Anggi Ashari Karnay, Sudirman Kaseng, Saharuddin Khitam, Muhammad Chusnul Khumairoh, Nur Izzatul Koria, Koria Kurnia, Ika Kurniasih, Ninik Kusmana, Endang Kustina, Rika Kusyani, Diah La Aba Lestari, Vina Linasari, Linasari Lubis, M. Ilyas Lubis, M. Syukri Azwar M. Agus Salim Al Fathoni Mahyus, Mahyus Mangurai, Silvia Uthari Nuzaverra Mayang Maratun Janah, Maratun Mardizal, Jonni Marzuki, Nur Rofifah Maswar, Muhammad Azwar Mau, Muliadi Meilendra, Karsal melani putri Misdawati, Misdawati Misra, Isra monica, shinta Muh Akbar Muhamad Tarmizi Muhammad , La Ode Muhammad Akbar MUHAMMAD MANSUR Muhammad Syahdarul Awal Muhazab, Ahmad Muhlizar Muhlizar Muliadi Muliatik, Sri Mulyah, Santi Mursalim Mursalim Nanda, Gustina Tri Nasution, Maulana Oscard Nasution, Pipit Utari Nina Nina Ninik Kurniasih Ninik Kurniasih SE Nisah HSB, Khoirun Nissa, Barkatun Novyanti, Fitri Nur Fadila Qomari, Fatia Nur Faika, Nur Faika Nur Hidayah Nur Mawaddah, Nur Nurhalifah, Nurhalifah Nurhaliza, Nurhaliza Prasetiowati, Lies Elina Pratama, Dianita Gadis Priyadi Nugraha P Purnomowati, Ratnasari Dyah Purnomowati, RR Ratnasari Dyah Putri Lubis, Lailan Syafira Putri Lubis, Nabila Putri, Rika Ilma Qippiah , Mariatul Rahimah, Siti Rangkuti, Sukma Adelina Razak, A Reine Suci Wulandari Rezky Febrianti Riri Trinanda Rismawati Rismawati Risti Rahmaniar Rosmadewi, Rosmadewi RR. Ella Evrita Hestiandari Ryandi, Oscar S, Aziza Saeni, Rahman Safar, Muhammad Saidah, Nur Saidi, Nurhajijah Salam, Adnan Yahya Saleh, Ramlah Sari Zawitri Sarma Siahaan Sawitri, Sari Sembiring, Selfi Yolanda Sety, La Ode Muhamad Shodiq, Ja'far Shofy K.P, Ramadhaniah Sipaami, Sipaami Siti Rohmah Sitti Murniati Muhtar, Sitti Murniati Siwi, Theresia Solly Aryza Sonni, Alem Febri Soraya Soraya Soraya, Ayu Sri Buwono . Stella Talitha Suganda, Nurdiyanti Suharsono Bantun Supriadi Supriadi Syahirani, Siti Syam, Azizah Lutfiah Syihabuddi, Syihabuddi Syihabuddin Syihabuddin Syukri, Makmur Ta'ali tahir, aswar Tarmizi, Tashadi Tati Baina Gultom Theresia Siwi Kartikawati Toti, Fastion Trisnawati Trisnawati Trisnawati Trisnawati Tuti Bahfiarti Wahida, Nur Wahyudi Wahyudi Wahyudi Wahyudi Warman, Syafil Wijayanti, Nanda Ayu Wina Wulandari Yuliana, Elsa Sari Yulianeta Yulianti, Eva Tri Yulianto Yulianto Yuliarma, Yuliarma Yusawinur Barella Yusuf, Andryan Zahroh Shaluhiyah Zainuddin Basri Zawitri, Sari Ziyanti, Nada Warla Zulham Al Farizi SE Zulham AlFarizi Zulpan, Zulpan