yakni
½√29
Pembahasan:
x︦ = 1 + 1 + 2 + 3 + 4 + 5 + 7 + 9
8
= 32
8
= 4
S² = Σ(xi – x︦)²
= 2(1–4)² + (2–4)² + (3–4)² + (4–4)² + (5–4)² + (7–4)² + (9–4)² ÷ 8
= 18 + 4 + 1 + 0 + 1 + 9 + 25
8
= 58
8
= 29
4
S = √29 = ½√29
4