Uji Validitas dan Reliabilitas Instrumen Penelitian Tingkat Pemahaman Materi Teks Deskripsi

Abstract

abstrak— Validitas merupakan ukuran sejauh mana suatu instrumen atau alat ukur dapat secara tepat mengukur apa yang seharusnya diukur. Dalam ranah penelitian, validitas memegang peranan yang sangat penting karena menentukan keakuratan serta relevansi data yang diperoleh. Di sisi lain , reliabilitas adalah ukuran dari konsistensi hasil pengukuran. Alat ukur disebut reliabel jika mampu memberikan hasil stabil dan konsisten jika digunakan pada kondisi yang serupa. Penelitian ini menggunakan penelitian kuantitatif. Subjek di dalam penelitian ini ialah 2 guru sebagai validator butir instrumen tes dan siswa kelas IX sebagai uji coba instrumen tes. Hasil uji validitas menunjukkan bahwa semua item soal sangat valid, sementara reliabilitas instrumen tergolong baik dengan nilai Cronbach's Alpha sebesar 0,846. Temuan ini menegaskan betapa pentingnya validitas dan reliabilitas dalam pendidikan demi memperoleh data yang akurat. Dengan pengembangan lebih lanjut, diharapkan kualitas pengajaran Bahasa Indonesia di sekolah dapat ditingkatkan.

Kata kunci—Instrumen Penelitian, Validitas, Reabilitas

abstract— Validity is a measure of the extent to which an instrument or measuring tool can accurately measure what it is supposed to measure. In the realm of research, validity plays a very important role because it determines the accuracy and relevance of the data obtained. On the other hand, reliability is a measure of the consistency of measurement results. A measuring instrument is said to be reliable if it is able to provide stable and consistent results when used in similar conditions. This research is quantitative research. The subjects in this research were 2 teachers as test instrument item validators and class IX students as test instrument testers. The validity test results show that all question items are very valid, while the reliability of the instrument is classified as good with a Cronbach's Alpha value of 0.846. These findings emphasize how important validity and reliability are in education in order to obtain accurate data. With further development, it is hoped that the quality of Indonesian language teaching in schools can be improved.