Statistics Mid Term Exam
Quiz
•
Business, Mathematics, Social Studies
•
University
•
Hard
Tito Hakim
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Nilai rata-rata dari data: 6, 7, 7, 8, 10, 8, 9, 9, 8 adalah ...
6
6,5
7
7,5
8
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Nilai median dan modus dari data: 5, 3, 4, 7, 7, 3, 6, 5, 5 berturut-turut adalah:
7 dan 5
6 dan 5
5 dan 5
6 dan 5
6 dan 4
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Simpangan baku dari data: 3, 2, 5, 3, 4, 6, 4, 5, 4 adalah ...
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Simpangan quartil dari data: 10, 13, 12, 11, 14, 15, 17, 16, 12, 14, 12, 11, 17 adalah ...
1,25
1,5
1,75
2
2,25
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Ragam atau Variasi dari data: 5, 3, 4, 4, 4, 6, 2, 7, 3, 2 adalah ...
2,0
2,1
2,2
2,3
2,4
6.
OPEN ENDED QUESTION
15 mins • Ungraded
Seorang financial planner melakukan penelitian atas rata-rata usia seseorang meraih kemandirian keuangan. Diketahui bahwa rata-rata sampel adalah sebesar 42,5 tahun dengan jumlah sampel sebesar 213 orang. Jika standar deviasi populasi sebesar 11,9 tahun dan standar deviasi sampel sebesar 10,4 tahun serta digunakan tingkat kepercayaan 99%, maka:
a. Berapa rentang nilai rata-rata populasi saat standar deviasi populasi diketahui?
b. Berapa rentang nilai rata-rata populasi jika diasumsikan standar deviasi populasi tidak diketahui?
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7.
OPEN ENDED QUESTION
15 mins • Ungraded
Dosen mata kuliah Statistika mencoba untuk meneliti nilai suatu kelas yang diampunya. Dia mendapat data bahwa nilai rata-rata populasinya adalah 87 dengan standar deviasi sebesar 9,3. Jika tingkat signifikansinya sebesar 1% dan disimulasikan bahwa rata-rata sampel akan berada di antara nilai 83 dan 91 hitunglah kemungkinan akan terjadi kesalahan tipe II (β) jika diketahui nilai rata-rata Statistika berada angka 77 yang diambil dari 36 mahasiswa sebagai sampel!
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