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UJI K-SAMPEL BERKAITAN (DEPENDENT)

UJI K-SAMPEL BERKAITAN (DEPENDENT). WILCOXON SIGNED-RANK TEST. Langkah-langkah. Setiap amatan ulangan dihitung perbedaan-nya ( di ) antara data Xi.1 dan Xi.2  di = Xi.1 – Xi.2 Untuk setiap nilai perbedaan 0  tidak dihitung .

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UJI K-SAMPEL BERKAITAN (DEPENDENT)

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  1. UJI K-SAMPEL BERKAITAN (DEPENDENT) WILCOXON SIGNED-RANK TEST

  2. Langkah-langkah • Setiapamatanulangandihitungperbedaan-nya (di) antara data Xi.1 dan Xi.2  di = Xi.1 – Xi.2 • Untuksetiapnilaiperbedaan 0  tidakdihitung. • Berinomorurut (rank) nilaiditsbdimulaidariygnilainya paling kecil. • Hitungjumlahperingkat (W) • Hitungfaktorkoreksi : ∑ (t3 – t) • HitungnilaistatistikZsigned-ranksbb:

  3. Langkahlanjutan • BandingkanhargaZhitungdgnZtabelpadaαtertentu, misal 0,05. • Kriteria: tolak Ho, jika |Zhit| > Ztabel.

  4. Contoh: • Sebuahpenelitianutkmengetahuipengaruhbahanygdiketikthdkecepatanmengetikmahasiswa. Penelitiandilakukanthd 12 mhsygmasing-masingmenegtik 2 paragrafdgnpanjangygsama. Satuparagrafberasaldari novel dansatuparagrafberasaldari textbook. 6 mhsmemulaimengetik Novel, dan 6 lainnyamemulaidgnmengetik Textbook. Waktupengetikankeduaparagraftsb (dalamdetik) dicatatsbb:

  5. LanjutanAnalisis… • t = 2  yaitu: 166 vs 166 dan 168 vs 168 • ∑ (t3 – t) = (23 – 2 ) = 6 • Hitung Z signed-rank = • Bandingkandgn Z tabelutkα = 0,05  Z tabel = 1,96 • MakaZhitung < Ztab  Ho diterima • Kesimpulan: bahwamateritulisantidakberpengaruhsignifikanthdkecepatanmhsmengetik.

  6. K ≥ 3  Friedman Rank Test • Catatan !!!

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