Question

Simpangan baku dari 4 5 6 7 8 6 7 5
hasilnya √2 bukan?

Answer 1

Iya hasilnya  √2 simpangan bakunya

Answer 2

4 5 5 6 6 7 7 8

X(mean) = 4 + 5 + 5 + 6 + 6 + 7 + 7 +8/8
X(mean) = 48/8 = 6

(xi-x(mean) )^2= (4 - 6)^2 + (5-6)^2 + (5-6)^2 + (6-6)^2 + (6-6)^2 + (7-6)^2 + (7-6)^2 + (8-6)^2
Σ (xi-x(mean))^2 = 4 + 1 + 1 + 0 + 0 + 1 + 1 +4 = 12

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