
Quiz Modul 2 Shift 1 Prakstat
Quiz
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Engineering
•
University
•
Medium
Timotius Yonatan
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Tujuan utama Multiple Regression Analysis (MRA) adalah…
Menentukan distribusi probabilitas variabel dependen
Memprediksi nilai variabel dependen berdasarkan beberapa variabel independen
Menghitung frekuensi kategori variabel nominal
Menyederhanakan jumlah observasi dalam dataset
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Dalam persamaan regresi Y = β0 + β1X1 + β2X2 + ε, β0 disebut…
Koefisien parsial
Intersep (konstanta)
Varians residual
Skewness
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Nilai R-squared (R²) memberikan informasi tentang…
Seberapa baik model regresi linear cocok dengan data pelatihan
Jumlah error pada data uji
Proporsi variabel independen yang tidak signifikan
Nilai rata-rata residual dari model
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Jika R² = 0,90 pada model regresi, interpretasi yang tepat adalah…
Model regresi linear sangat baik karena dapat menjelaskan 90% variasi data pelatihan
Model memiliki error besar
90% variabel independen tidak berpengaruh
Model tidak memenuhi asumsi linearitas
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Residual dalam regresi didefinisikan sebagai…
Prediksi model dikurangi rata-rata Y
Nilai aktual dikurangi nilai prediksi
Nilai prediksi dikalikan koefisien
Varians dari variabel independen
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Salah satu asumsi regresi linear adalah mean of residuals harus…
Positif besar
Mendekati nol
Sama dengan R²
Bernilai negatif selalu
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Homoskedastisitas berarti…
Residual berdistribusi normal sempurna
Varians residual konstan untuk semua tingkat nilai prediksi
Semua koefisien regresi signifikan
Tidak ada autokorelasi
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