

PELUANG
Presentation
•
Mathematics
•
12th Grade
•
Hard
Priyo Priyono
FREE Resource
7 Slides • 0 Questions
1
2
MATERI PELUANG
Percobaan
Ruang Sample
Kejadian
Peluang
Frekuensi Harapan
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3
PERCOBAAN
Contoh Percobaan :
1. Percobaan melempar satu keping mata uang logam
Percobaan melempar dua mata uang logam
. Percobaan melempar satu dadu
Percobaan melempar dua dadu
Percobaan melempar i mata uang logam dan satu dadu
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4
RUANG SAMPLE
Contoh :
Jika kita melempar sebuah mata uang logam sekali lemparan, maka ruang sample nya adalah :
S = { A , G }
Banyaknya ruang sample = n(S) = 2
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5
KEJADIAN
Contoh Kejadian :
Jika kita melempar sebuah dadu satu kali lemparan
A : Kejadian muncul mata dadu Ganjil
A : { 1 , 3 , 5 } maka n(A) = 3
B : Kejadian muncul mata dadu Genap
B : {2 , 4 , 6 } maka n(B) = 3
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6
PELUANG
Contoh Peluang :
Sebuah dadu dilempar sekali lemparan, Tentukan peluang munculnya mata dadu genap
Jawab :
S = { 1 , 2 , 3 , 4 , 5 , 6 } dan n(S) = 6
A = Kejadian muncul mata dadu genap
A = { 2 , 4 , 6 } dan n(A) = 3
Sehingga P(A) = n(A)/n(S) = 3/6 = 1/2
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7
FREKUENSI HARAPAN
Contoh :
Sebuah mata uang logam dilempar sebanyak 100 kali lemparan.
Tentukan harapan munculnya Gambar pada mata uang
Jawab :
S = { A , G } dan n(S) = 2
A = Kejadian muncul Angka, A = {A} dan n(A) = 1 maka P(A) = 1/2
fh (A) = n. P(A) = 100 x 1/2 = 50
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