Question

Jika rata-rata Dari x-3,x-1,7,x,2x-1, Dan 3x-5 adalah 3,5, mediannya adalah

Answer 1

Verified answer

Rata-rata = [(x-3)+(x-1)+7+x+(2x-1)+(3x-5)] / 6
3,5 = (x + x + x + 2x + 3x - 3 - 1 + 7 - 1 - 5) / 6
3,5 x 6 = 8x - 3
21 = 8x - 3
8x = 21 + 3
8x = 24
x = 24/8
x = 3

x - 3 = 3 - 3 = 0
x - 1 = 3 - 1 = 2
2x - 1 = 2(3) - 1 = 6 - 1 = 5
3x - 5 = 3(3) - 5 = 9 - 5 = 4

Data
0, 2, 7, 3, 5, 4
urutkan
0, 2, 3, 4, 5, 7

maka mediannya
Me = 1/2 x (3 + 4)
Me = 1/2 x 7
Me = 7,5