
Komstat B Week 9
Quiz
•
Information Technology (IT)
•
University
•
Practice Problem
•
Hard
Alvian (ian)
Used 5+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
X = sm.add_constant(X)
fungsi dari add_constant() adalah
Menambahkan nilai konstanta 0 pada seluruh baris data X
Menambahkan kolom residual untuk keperluan analisis regresi
Menambahkan kolom konstanta (intersep) ke dalam data X untuk regresi linier
Mengonversi seluruh nilai X menjadi bilangan konstan
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(R) Untuk mendapatkan nilai Z tabel alpha/2 pada confidence interval digunakan function
qnorm(alpha/2)
qnorm(1-alpha/2)
qnorm(1-alpha/2, lower.tail = FALSE)
qnorm ((1-alpha)/2, lower.tail = FALSE)
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kode berikut merupakan algoritma untuk menghitung p-value menggunakan metode
Trapeziodal
Simpson 1/3
Simpson 3/8
Reimann
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(python) Untuk mendapatkan nilai Z tabel alpha/2 pada uji dua arah digunakan function
st.norm.ppf(1-alpha/2)
st.norm.ppf(alpha/2)
st.norm.cdf(alpha/2)
st.norm.cdf(1-alpha/2)
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
(python) np.cov(x) menghasilkan matriks kovarians populasi. Untuk mendapatkan matriks kovarians sampel, digunakan tambahan berupa … pada parameternya.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(R) cor(x) akan menghasilkan nilai korelasi berupa
int
float
matriks
array
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jika x₂ meningkat satu satuan, maka y bertambah 30 satuan
Jika x₂ meningkat satu satuan, maka y berkurang 30 satuan
x₂ adalah penyebab utama perubahan nilai y
Jika x₂ = 0, maka y akan menjadi 30
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