ANALISIS PRESTASI BELAJAR MATEMATIKA SISWA KELAS X PADA MATERI STATISTIKA BERDASARKAN SOAL URAIAN

Honesty Honesty; Tiara Khansa Nabila; Wulan Rahma Riani; Rahmadina Putri; Nadiatul Husna; Fitra Nofri Hidayah; Anna Cesaria

Authors

Honesty Honesty Universitas PGRI Sumatera Barat
Tiara Khansa Nabila Universitas PGRI Sumatera Barat
Wulan Rahma Riani Universitas PGRI Sumatera Barat
Rahmadina Putri Universitas PGRI Sumatera Barat
Nadiatul Husna Universitas PGRI Sumatera Barat
Fitra Nofri Hidayah Universitas PGRI Sumatera Barat
Anna Cesaria Universitas PGRI Sumatera Barat

Abstract

This study aims to analyze the level of understanding of tenth-grade students in statistics based on their performance in descriptive test items. The study employed a quantitative descriptive method with 11 students as the subjects. The research instrument consisted of five essay questions covering pie charts, combined averages, mode of grouped data, distribution median, and standard deviation. Data were analyzed through the calculation of average scores, classical completeness, and per-item analysis using a holistic rubric. The results showed that the highest score obtained by students was 88 and the lowest was 16, with a class average of 64.73. The level of classical completeness only reached 58%, which did not meet the ideal standard of 75%. Students demonstrated better mastery of procedural questions such as data representation and combined averages, while they experienced difficulties with advanced statistical concepts such as mode, median, and standard deviation. These findings indicate that students’ understanding of statistical concepts is still uneven, suggesting the need for consistent practice with essay-type problems and the application of contextual learning approaches to strengthen understanding, particularly in data interpretation and systematic calculations.

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Keywords:

Conceptual Understanding, Learning Achievement, Essay Question, Statistics

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