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BAB DELAPAN
KORELASI SEDERHANA
Definisi :Sekumpulan metode statistika untuk mengukur
kekuatan hubungan antara dua variabel
Jenis Variabel dalam korelasi sederhana ;
a. Variabel Bebas, variable yang mempengaruhi dan dapat dipilih/ diubah sesuai keinginan
peneliti
b. Variabel Tidak Bebas, variable yang sudah ditetapkan peneliti dan tidak dapat diubah
Analisa Korelasi mencakup 4 point penting sbb;
1. Ada nilai korelasi yang terentang dari 0 s/d +/- 1
2. Terdapat hubungan atau Tidak ada hubungan korelasi antar dua variable
3. Terdapat arah hubungan (bisa positif atau negative)
4. Terdapat kekuatan hubungan (lihat tabel kekuatan hubungan)
KORELASI SEDERHANA
Korelasi
Perason
Korelasi
Spearmans
Koefisien
Determinansi
Koefisien
Kontingensi
Koefisien Korelasi Kekuatan Hubungan
± 1,00
0,85 – 0,99
0,70 – 0,84
0,50 – 0,69
0,30 – 0,49
0,10 – 0,29
0,00
Sempurna
Sangat Kuat
Kuat
Sedang
Lemah
Sangat Lemah
Tidak ada hubungan
Rumus Korelasi Sedehana
1. Korelasi Pearson
Keterangan :
n = banyaknya pasangan data
X = Variabel bebas
2. Korelasi Spearmans
Keterangan;
d = selisih peringkat
n = banyaknya data
( )
( ) ( )
( )
2 2
2 2
n XY X Y
r
n X X n Y Y
−
=
− −
∑ ∑ ∑
∑ ∑ ∑ ∑
2
2
6
1
( 1)
d
rs
n n
= −
−
∑
2
_ _
X Jumlah kuadrat X
=
∑ 2
_ _
Y Jumlah kuadrat Y
=
∑
_ _ _
XY Jumlah hasi kali XY
=
∑
Rumus Korelasi Sedehana
3. Koefisien Determinansi
KP = r2 X 100%
Keterangan :
KP = Koefisien Penentu
r = Koefisien korelasi
4. Koefisien Kontingensi
Dimana ;
Keterangan;
Oi = Data Observasi
Ei = Data Harapan
𝑐𝑐 =
𝜒𝜒2
𝜒𝜒2 + 𝑛𝑛
𝜒𝜒2
=
𝑂𝑂𝑂𝑂 − 𝐸𝐸𝐸𝐸 2
𝐸𝐸𝐸𝐸

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Bab.8 korelasi sederhana

  • 2. Definisi :Sekumpulan metode statistika untuk mengukur kekuatan hubungan antara dua variabel Jenis Variabel dalam korelasi sederhana ; a. Variabel Bebas, variable yang mempengaruhi dan dapat dipilih/ diubah sesuai keinginan peneliti b. Variabel Tidak Bebas, variable yang sudah ditetapkan peneliti dan tidak dapat diubah Analisa Korelasi mencakup 4 point penting sbb; 1. Ada nilai korelasi yang terentang dari 0 s/d +/- 1 2. Terdapat hubungan atau Tidak ada hubungan korelasi antar dua variable 3. Terdapat arah hubungan (bisa positif atau negative) 4. Terdapat kekuatan hubungan (lihat tabel kekuatan hubungan)
  • 3. KORELASI SEDERHANA Korelasi Perason Korelasi Spearmans Koefisien Determinansi Koefisien Kontingensi Koefisien Korelasi Kekuatan Hubungan ± 1,00 0,85 – 0,99 0,70 – 0,84 0,50 – 0,69 0,30 – 0,49 0,10 – 0,29 0,00 Sempurna Sangat Kuat Kuat Sedang Lemah Sangat Lemah Tidak ada hubungan
  • 4. Rumus Korelasi Sedehana 1. Korelasi Pearson Keterangan : n = banyaknya pasangan data X = Variabel bebas 2. Korelasi Spearmans Keterangan; d = selisih peringkat n = banyaknya data ( ) ( ) ( ) ( ) 2 2 2 2 n XY X Y r n X X n Y Y − = − − ∑ ∑ ∑ ∑ ∑ ∑ ∑ 2 2 6 1 ( 1) d rs n n = − − ∑ 2 _ _ X Jumlah kuadrat X = ∑ 2 _ _ Y Jumlah kuadrat Y = ∑ _ _ _ XY Jumlah hasi kali XY = ∑
  • 5. Rumus Korelasi Sedehana 3. Koefisien Determinansi KP = r2 X 100% Keterangan : KP = Koefisien Penentu r = Koefisien korelasi 4. Koefisien Kontingensi Dimana ; Keterangan; Oi = Data Observasi Ei = Data Harapan 𝑐𝑐 = 𝜒𝜒2 𝜒𝜒2 + 𝑛𝑛 𝜒𝜒2 = 𝑂𝑂𝑂𝑂 − 𝐸𝐸𝐸𝐸 2 𝐸𝐸𝐸𝐸