Abstract
A good assessment instrument is an instrument that can reveal data in accordance with the actual reality, is fixed, steady or reliable, and has varying degrees of difficulty and has a good index of discrimination. Therefore this study was conducted to analyze reliability, validity, level of difficulty, and differentiation of items that can be used to reveal students' mathematics problem solving abilities. The test questions tested are questions in the form of 4 numbers. The calculation results show that the 4 test questions for problem solving ability are reliability in the medium category, and valid with each category is high. The index has difficulty number 1 in the easy category, number 2 and 3 in the medium category, and number 4 in the difficult category, and the discrimination index is quite good
Highlights
A good assessment instrument is an instrument that can reveal data in accordance with the actual reality, is fixed, steady or reliable, and has varying degrees of difficulty and has a good index of discrimination
The calculation results show that the 4 test questions for problem solving ability are reliability
Trends in International Mathematics and Science Study (TIMSS) & PIRLS International Study Center: Lynch School of Education, Boston College
Summary
Diterima 16 Februari 2019, disetuji 4 Maret 2019, diterbitkan 30 April 2019 Pengutipan: Son, A.L . (2019). Diterima 16 Februari 2019, disetuji 4 Maret 2019, diterbitkan 30 April 2019 Pengutipan: Son, A.L . Instrumen Kemampuan Pemecahan Masalah Matematis: Analisis Reliabilitas, Validitas, Tingkat Kesukaran Dan Daya Beda Butir Soal. Gema Wiralodra, Vol 10, No 1, Hal 41 - 52, April 2019. Oleh Karena itu dilakukan penelitian ini untuk menganalisis reliabilitas, validitas, tingkat kesukaran, dan daya beda butir soal, yang digunakan untuk mengungkap kemampuan pemecahan masalah matematis siswa. Hasil perhitungan menunjukkan bahwa ke-4 soal tes kemampuan pemecahan masalah adalah reliabilitas dalam kategori sedang, serta valid dengan kategori masing-masing adalah tinggi. Indeks kesukaran soal nomor 1 dalam kategori mudah, nomor 2 dan 3 dalam kategori sedang, dan nomor 4 dalam kategori sulit, serta indeks diskriminasi yang cukup baik. Kata Kunci: Kemampuan Pemecahan Masalah, Instrumen penilaian, Realibilitas, Validitas, indeks kesukaran, indeks diskriminasi
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