
UAS Forecasting 2025
Authored by Nurul Komariah
Mathematics
University
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30 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Singkatan dari ARIMA dalam metodologi Box-Jenkins adalah:
Average, Ratio, Index, Moving, Analysis
Auto Regression Integrated Moving Average
Autocorrelation Ratio with Iterative MA
Autoregressive Integrated Median Adjustment
Autoregression with Internal Mean Approximation
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Dalam model ARIMA(p,d,q), angka q merujuk pada:
Banyaknya diferensiasi untuk membuat data stasioner
Orde dari komponen autoregresif
Orde dari komponen moving average
Jumlah observasi dalam satu periode
Nilai prediksi jangka panjang
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Tujuan utama dari proses differencing dalam metodologi ARIMA adalah untuk:
Menambah varians data
Menghilangkan komponen musiman
Menjadikan data stasioner
Meningkatkan korelasi antar variabel
Mendeteksi outlier dalam data
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Manakah dari berikut ini yang bukan merupakan langkah dalam metodologi Box-Jenkins?
Identifikasi model
Estimasi parameter
Pengujian hipotesis regresi
Diagnostik model
Peramalan
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Jika plot ACF menunjukkan cut-off setelah lag ke-2 dan PACF menunjukkan pola yang menurun secara bertahap, maka kemungkinan model ARIMA yang tepat adalah:
ARIMA(2,0,0)
ARIMA(0,1,2)
ARIMA(0,0,2)
ARIMA(2,1,0)
ARIMA(0,0,1)
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Jika plot PACF menunjukkan cut-off setelah lag ke-1 dan ACF menunjukkan pola menurun secara bertahap, maka kemungkinan model ARIMA yang tepat adalah:
ARIMA(1,0,0)
ARIMA(0,0,1)
ARIMA(1,1,1)
ARIMA(0,0,2)
ARIMA(2,0,0)
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Jika plot ACF dan PACF keduanya menunjukkan pola menurun secara bertahap dan tidak jelas cut-off, maka kemungkinan langkah yang harus dilakukan adalah:
Mengganti metode estimasi parameter
Menggunakan ARIMA dengan p= 0 dan q= 0
Melakukan diferensiasi karena data kemungkinan belum stasioner
Meningkatkan orde hingga 2 atau lebih tanpa pengecekan
Memilih model secara acak dan bandingkan AIC-nya
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