Question

tolong kak dengan caranya yang ada di gambar :)​

Answer 1

statistik

urutkan data

6, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 10

n = banyak data = 12

x = rata - rata

x = (6 + 3 × 7 + 4 × 8 + 3 × 9 + 10)/12

x = 96/12

x = 8

lihat rumus

S²

= ((6 - 8)² + 3(7 - 8)² + 4(8 - 8)² + 3(9 - 8)² + (10 - 8)²)/12

= (4 + 3 + 0 + 3 + 4)/12

= 14/12

= 7/6