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All Journal JURNAL MATEMATIKA STATISTIKA DAN KOMPUTASI Prosiding Konfererensi Nasional Bahasa Arab JGK (Jurnal Guru Kita) Guruku: Jurnal Pendidikan dan Sosial Humaniora
Khoirunnisa Nasution
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Arts Humanities Education Environmental Science Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

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Journal : JURNAL MATEMATIKA STATISTIKA DAN KOMPUTASI

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Effect of Variability on Cronbach Alpha Reliability in Research Practice Muhammad Amirrudin; Khoirunnisa Nasution; Supahar Supahar
Jurnal Matematika, Statistika dan Komputasi Vol. 17 No. 2 (2021): JANUARY 2021
Publisher : Department of Mathematics, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jmsk.v17i2.11655

Abstract

This study aims to describe the effects of variability through data simulation to determine which aspect of variability that maximizes coefficient of Cronbach Alpha reliability. Cronbach Alpha is widely used for estimation of reliability, in recent still. This study served a conceptual and practical simulation for estimating the profound aspect of Cronbach Alpha coefficient relating to the variability of the data. This study carried out with data simulated using the rand between method by Microsoft Excel then simulate different categorical data responses to different range of items by manipulating sample size, range, number of items, variance and standard deviation. The results show that number of variance and standard deviation of data had the most profound aspect of Cronbach Alpha's reliability other than range. The increasing number on some aspect shows that standard deviation and variance has the stability to shows the positive correlation with the coefficient of Cronbach Alpha reliability other than range.
Co-Authors Afni Nurwardah Alberto Siagian Cici Dwi Wana Della Nanda Sidabalok Devi Triana Purba ELVI MAILANI Fitra Awalia Rahmawati Mardiyah Kharismayanda Muhammad Amirrudin Nabila Arbaa Fadhilah Nabilla Nabilla Putri Suci Rahmadani Br Sinurat Rafi Arya Dipa Permana Rahmilawati Ritonga Supahar Supahar Syahrial Syahrial Thesa Aulya Sagala