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Mean = 2325/30
Mean = 77,5
Siswa yang nilainya lebih dari rata" sebanyak 14 orang
3. 45 55 55 60 65 70 70 75 85 85 85 85 90 90 95 100
Median = 75+85/2
Median = 160/2
Median = 80
4. Modus = nilai yang sering muncul
Modus = 5
6. 8×176-2×a = 6×175
1408-2a = 1050
1408-1050 = 2a
358 = 2a
358/2 = a
179 = a
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