Analysis of Students Errors in Solving Statistical Problems A Case of 8th Grade Students at SMPN 4 Siak Hulu, Indonesia
Abstract
Abstract The purpose of this research is to describe and analyze the mistakes made by students when working on math problems in statistics material. This research was conducted in class VIII SMPN 4 Siak Hulu, with 10 students as research subjects. This type of research is a qualitative descriptive research. Data collection techniques are using tests, and unstructured interviews. The results showed that: 1) there were 4 types of errors, namely conceptual errors by 30 percenr, fact errors by 4 percent, procedural errors by 14 percent, and technical errors by 10 percent 2) there are 5 indicators discussed related to statistical material, namely indicator 1 (Determining the average value of a data), indicator 2 (Analyzing data), indicator 3 (Determining the median of even data), indicator 4 (Determining the mode value of a data), indicator 5 (Determining the values of the first, second and third quartiles in group data). In the fifth indicator, only 3 out of 10 students were able to answer correctly or 30 percent, this is the indicator with the lowest percentage of the five indicators; 3) the cause of student errors is the lack of student understanding of the prerequisite material for that solution in order to overcome similar errors, namely by always checking student understanding regarding prerequisite material before starting the lesson and choosing appropriate learning methods and strategies so that students can easily understand the material being taught.
Keywords students’ error analysis, statistics learning, junior high school students.
Abstrak Tujuan penelitian ini adalah untuk mendeskripsikan dan menganalisis kesalahan yang dilakukan siswa dalam mengerjakan soal matematika pada materi statistika. Penelitian ini dilakukan di kelas VIII SMPN 4 Siak Hulu, dengan subjek penelitian sebanyak 10 siswa. Jenis penelitian ini adalah penelitian deskriptif kualitatif. Teknik pengumpulan data yaitu menggunakan tes, dan wawancara tidak terstruktur. Hasil penelitian menunjukkan bahwa: 1) terdapat 4 jenis kesalahan yaitu kesalahan konsep sebesar 30 persen, kesalahan fakta sebesar 4 persen, kesalahan prosedur sebesar 14 persen, dan kesalahan teknis sebesar 10 persen 2) ada 5 indikator yang dibahas terkait materi statistika yaitu indikator 1 (Menentukan nilai rata-rata dari suatu data), indikator 2 (Menganalisis data), indikator 3(Menentukan median dari data genap), indikator 4 (Menentukan nilai modus dari suatu data), indikator 5(Menentukan nilai kuartil satu, dua, dan tiga pada data kelompok). Pada indikator kelima, hanya 3 dari 10 siswa yang mampu menjawab dengan benar atau sebesar 30 persen, ini menjadi indikator dengan persentase yang terendah dari kelima indikator 3) penyebab kesalahan siswa adalah kurangnya pemahaman siswa mengenai materi prasyarat untuk itu solusi agar mengungangi kesalahan serupa yaitu dengan selalu mengecek pemahaman siswa terkait materi prasyarat sebelum melulai pelajaran dan memilih metode dan strategi pembelajaran yang tepat agar siswa mudah dalam memahami materi yang diajarkan.
Kata kunci analisis kesalahan siswa, pembelajaran statistika, siswa SMP.
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