STATISTIKA DESKRIPTIF LATIHAN SOAL NOTASI SIGMA DAN DASAR-DASAR STATISTIKA DESKRIPTIF NAMA = Caroline Marenta Simanjuntak NIM = 11140237 KELAS =11. 2 A. 04
Diketahui : X 1 = 3 X 2 = 4 X 3 = 6
1. 2. = X 1 + X 2 + X 3 = 3 + 4 + 6 = 13 = = 4 (X 2 + X 3 ) 4 (4 + 6) 4 (10) 40
7. = = (X 1 + X 2 + X 3)2 - 2 (3 + 4 + 6)2 - 2 (13)2 - 2 169 – 2 = 167 8. = n. k = 3. 7 = 21