
Quiz Statistika dan Probabilitas
Authored by Fajar Muttaqi
Computers
University
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13 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
Apa yang dimaksud dengan distribusi sampling?
Proses pengambilan sampel acak dari populasi
Distribusi probabilitas dari suatu statistik yang diperoleh dari berbagai sampel acak dengan ukuran sama
Penaksiran nilai parameter populasi berdasarkan data sampel
Distribusi nilai rata-rata populasi yang diketahui
2.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
Mengapa distribusi sampling penting dalam statistika?
Membantu mengurangi ukuran sampel yang diperlukan
Sebagai dasar dalam inferensi statistika dan mengukur seberapa baik suatu statistik memperkirakan parameter populasi
Untuk memperkirakan parameter populasi secara langsung
Untuk menguji hipotesis tanpa data sampel
3.
MULTIPLE CHOICE QUESTION
10 mins • 10 pts
Jika rata-rata populasi (μ) adalah 50 dan simpangan baku (σ) adalah 10 dengan ukuran sampel (n) sebanyak 25, berapakah standard error (SE)?
5
2
4
10
4.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
Apa sifat penaksir titik yang baik?
Tidak bias dan efisien
Dapat digunakan untuk semua populasi
Variansnya tinggi
Bergantung pada ukuran populasi
5.
MULTIPLE CHOICE QUESTION
10 mins • 10 pts
Sebuah sampel memiliki rata-rata (x̄) = 50, simpangan baku (σ) = 10, dan ukuran sampel (n) = 25. Berapakah interval kepercayaan 95% untuk μ?
(48, 52)
(46.08, 53.92)
(45, 55)
(44.5, 55.5)
6.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
Jika koefisien korelasi Pearson (r) adalah +1, apa arti hubungan antara dua variabel?
Hubungan sangat lemah
Hubungan tidak ada
Hubungan sempurna dan positif
Hubungan sempurna dan negatif
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Apa rumus untuk menghitung standard error (SE) dari proporsi sampel (p̂)?
SE = √[p̂(1-p̂)/n]
SE = p̂/n
SE = σ/√n
SE = (x̄ - μ)/σ
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