Question

Data : 80, 200, 420, 8t, 100. Jika diketahui x rata-rata adalah 6 maka nilai t .....

Answer 1

Banyak data: 5
Total data : 800 + 80t
Rumus rata - rata: Total data/banyak data
=> 6 = (800 + 80t)/5
=> 30 = 800 + 80t
=> -730 = 80t
=> t = -73/8 = -9,125.