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Contoh Kasus Di sebuah fakultas pertanian diadakan penelitian untuk mengetahui apakah ada perbedaan pengaruh pemberian pupuk A, pupuk B, dan pupuk C pada pertambahan lebar daun tumbuhan X. Untuk itu, diambil sampel sebanyak 30, dibagi menjadi 3 kelompok. Masing-masing kelompok diberi pupuk yang berbeda. Hasilnya dapat dilihat pada tabel berikut ini :
DATA PERTAMBAHAN LEBAR DAUN TUMBUHAN X MENURUT JENIS PUPUK YANG DI BERIKAN (Cm) Lebar daun Jenis Pupuk Pupuk A Pupuk B Pupuk C 4.99 8.02 14 4.99 8 13.99 5 8 14 5.01 8 13.99 5 8 14 4.99 7.98 13.98 5 8.01 14 5 8 14 5 8.02 14.02 5.02 7.98 14
Oneway
Interpretasi Hasil Analisis Deskriptif Secara deskriptif kita bisa melihat sekilas bahwa rata-rata lebar daun karena pemberian pupuk A dan pupuk B berbeda relatif jauh. Pada pemberian pupuk A, rata-ratanya sekitar 4,99 dan pupuk B sekitar 8,00.
 
Interpretasi Hasil Analisis Homogenety of Variance Dari tabel diatas, nilai p-value sebesar 0,618 mengizinkan kita menolak hipotesis nol pada tingkat signifikasi 5%, Oleh karena itu, asumsi kesamaan ragam terpenuhi.
 
Interpretasi Hasil Analisis Anova Pada tabel Anova di atas, kita bisa melihat bahwa nilai signifikasinya sebesar 0,000. Nilai signifikasi atau p-value juga mengizinkan kita untuk menolak hipotesis nol pada tingkat signifikasi 5%. Artinya minimal ada satu di antara ketiga pupuk itu yang memberikan pertambahan lebar daun yang berbeda.
Post Hoc Tests
Interpretasi Hasil Analisis Multiple Comparisons Tabel di atas ini memberikan hasil pengujian parsial dua populasi. Dari sini kita dapat mengetahui pupuk mana yang akan memberikan pengaruh yang berbeda. Ternyata ketiga pupuk memberikan pengaruh yang berbeda-beda, terlihat dari munculnya tanda bintang pada semua jenis pupuk. Sebaliknya untuk mengetahui pupuk mana yang tidak berbeda secara signifikasi pengaruhnya dapat dilihat pada tabel berikut ini.
Homogeneous Subsets
Interpretasi Hasil Analisis lbr_daun Terlihat ketiga sampel terbagi ke dalam tiga subset, yang menunjukkan bahwa ketiga pupuk memang mempunyai perbedaan yang signifikan dalam pengaruhnya terhadap pertamabahan lebar daun.

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Pp Anova

  • 1. Contoh Kasus Di sebuah fakultas pertanian diadakan penelitian untuk mengetahui apakah ada perbedaan pengaruh pemberian pupuk A, pupuk B, dan pupuk C pada pertambahan lebar daun tumbuhan X. Untuk itu, diambil sampel sebanyak 30, dibagi menjadi 3 kelompok. Masing-masing kelompok diberi pupuk yang berbeda. Hasilnya dapat dilihat pada tabel berikut ini :
  • 2. DATA PERTAMBAHAN LEBAR DAUN TUMBUHAN X MENURUT JENIS PUPUK YANG DI BERIKAN (Cm) Lebar daun Jenis Pupuk Pupuk A Pupuk B Pupuk C 4.99 8.02 14 4.99 8 13.99 5 8 14 5.01 8 13.99 5 8 14 4.99 7.98 13.98 5 8.01 14 5 8 14 5 8.02 14.02 5.02 7.98 14
  • 4. Interpretasi Hasil Analisis Deskriptif Secara deskriptif kita bisa melihat sekilas bahwa rata-rata lebar daun karena pemberian pupuk A dan pupuk B berbeda relatif jauh. Pada pemberian pupuk A, rata-ratanya sekitar 4,99 dan pupuk B sekitar 8,00.
  • 5.  
  • 6. Interpretasi Hasil Analisis Homogenety of Variance Dari tabel diatas, nilai p-value sebesar 0,618 mengizinkan kita menolak hipotesis nol pada tingkat signifikasi 5%, Oleh karena itu, asumsi kesamaan ragam terpenuhi.
  • 7.  
  • 8. Interpretasi Hasil Analisis Anova Pada tabel Anova di atas, kita bisa melihat bahwa nilai signifikasinya sebesar 0,000. Nilai signifikasi atau p-value juga mengizinkan kita untuk menolak hipotesis nol pada tingkat signifikasi 5%. Artinya minimal ada satu di antara ketiga pupuk itu yang memberikan pertambahan lebar daun yang berbeda.
  • 10. Interpretasi Hasil Analisis Multiple Comparisons Tabel di atas ini memberikan hasil pengujian parsial dua populasi. Dari sini kita dapat mengetahui pupuk mana yang akan memberikan pengaruh yang berbeda. Ternyata ketiga pupuk memberikan pengaruh yang berbeda-beda, terlihat dari munculnya tanda bintang pada semua jenis pupuk. Sebaliknya untuk mengetahui pupuk mana yang tidak berbeda secara signifikasi pengaruhnya dapat dilihat pada tabel berikut ini.
  • 12. Interpretasi Hasil Analisis lbr_daun Terlihat ketiga sampel terbagi ke dalam tiga subset, yang menunjukkan bahwa ketiga pupuk memang mempunyai perbedaan yang signifikan dalam pengaruhnya terhadap pertamabahan lebar daun.