PENGARUH METODE DAN UKURAN SAMPEL TERHADAP VARIANSI SKOR HASIL PENYETARAAN

Tri Rijanto

doi:10.21831/pep.v16i1.1122

PENGARUH METODE DAN UKURAN SAMPEL TERHADAP VARIANSI SKOR HASIL PENYETARAAN

Tri Rijanto, Jurusan Teknik Elektro Fakultas Teknik Universitas Negeri Surabaya, Indonesia

10.21831/pep.v16i1.1122

Abstract

Penelitian ini bertujuan untuk memperoleh informasi perbedaan variansi skor hasil penyetaraan (equating) metode linear dan metode eki-persentil untuk ukuran sampel 200, 400, dan 800 pada Ujian Akhir Sekolah Berstandar Nasional (UASBN). Metode yang digunakan adalah simulasi de-ngan variabel metode penyetaraan dan banyaknya responden. Data pene-litian berupa respons peserta UASBN SD/MI tahun pelajaran 2008/2009 mata pelajaran IPA di Jakarta Timur, yang ditentukan menggunakan teknik penarikan sampel acak dengan pengembalian. Hipotesis diuji menggunakan uji kesamaan variansi. Hasil penelitian dengan α = 0,05 menunjukkan: (1) variansi skor penyetaraan metode ekipersentil (σ²_ekp200) tidak berbeda de-ngan variansi skor penyetaraan metode linear (σ²_lin200) untuk ukuran sampel 200, (2) variansi skor penyetaraan metode ekipersentil (σ²_ekp400) tidak ber-beda dengan variansi skor penyetaraan metode linear (σ²_lin400) untuk ukuran sampel 400, dan (3) variansi skor penyetaraan metode ekipersentil (σ²_ekp800) berbeda dengan variansi skor penyetaraan metode linear (σ²_lin800) untuk ukuran sampel 800.

Kata kunci: variansi skor, equating, metode ekipersentil, metode linear

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THE IMPACT OF METHODS AND SAMPLE SIZE TO THE SCORE VARIANCE OF EQUATING RESULT

Abstract

This study was aimed to obtain information on the difference of score variance as a result of equating linear method and equipercentile method for the sample size of 200, 400, and 800 in the Final Examinition of National Standardized Schools. The method used was a simulation of variables equating method and the number of respondents. The population are examinees from the 2008/2009 elementary school final examination for science class in East Jakarta. Random sampling with replacement technique was used. The hypotheses were tested using similarity variance. The results with α = 0,05 showed that: (1) the equated score variance from equiper-centile method (σ²_ekp200) was not different from the equated score variance from linear method (σ²_lin200) for the sample size of 200, (2) the equated score variance from equipercentile method (σ²_ekp400) was not different from the equated score variance from linear method (σ²_lin400) for the sample size of 400, and (3) the equated score variance from equipercentile method (σ²_ekp800) was different from the equated score variance from linear method (σ²_lin800) for the sample size of 800.

Keywords: score variance, equating, equipercentile method, linear method

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DOI: https://doi.org/10.21831/pep.v16i1.1122