Simpangan baku 5,7,7,6,5​

Penjelasan dengan langkah-langkah:

Rataan

x̄ = (5 + 5 + 6 + 7 + 7)/5

x̄ = 30/5

x̄ = 6

Simpangan baku

S = √[(5 – 6)^2 + (5 – 6)^2 + (6 – 6)^2 + (7 – 6)^2 + (7 – 6)^2] / 5

S = √(1 + 1 + 0 + 1 + 1)/5

S = √(4/5)

S = 2/5 √5