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ANALISIS KORELASI

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ANALISIS KORELASI. Koefisien korelasi antara variabel acak X dan variabel acak Y ( koefisien korelasi populasi ) didefinisikan sebagai : , , ,

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ANALISIS KORELASI

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  1. ANALISIS KORELASI

  2. KoefisienkorelasiantaravariabelacakX danvariabelacakY (koefisienkorelasipopulasi)didefinisikansebagai : , , , • Koefisienkorelasi : adalahsuatuukuran yang menunjukkantingkathubungan linier antaravariabelacakXdanvariabelacakY.

  3. Berbedadengananalisisregresi yang dapatmenaksirnilaivariabeldependenapabiladiketahuinilaitertentudarivariabelindependen, analisiskorelasihanyasebatasmenjelaskankekuatanhubungan linier antaraduavariabel X dan Y.

  4. Jika terdapat sampel acak berukuran nmaka koefisien korelasi sampel adalah : = , Koefisienkorelasisampel r adalahdugaantitikdari .

  5. disebutkoefisiendeterminasisampel , yaitunilai yang menyatakanbesarnyaproporsivariabilitasdalamY yang dapatdijelaskanolehhubunganliniernyadenganX.

  6. UJI HIPOTESIS UNTUK • Hipotesis: A. B. C. Statistik yang digunakan: yang mendekatidistribusi normal dengan mean danvariansi . Statistikuji :

  7. Bandingkannilaistatistikpengujiz dengannilaikritikdaridistribusi normal sesuaidengantingkatsignifikasi yang dipilih.

  8. Contoh : Liatcontoh 12 dan 13 dibuku Walpole

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