std 3.1,3.7,4.4,5.2,4.5,5.2,4.6,5.8,5.8,4.9,6.1,6.4

解答

标准差

3.1, 3.7, 4.4, 5.2, 4.5, 5.2, 4.6, 5.8, 5.8, 4.9, 6.1, 6.4

0.98176 \dots

求解步骤

计算方差:

0.96386 \dots

计算

σ (X) = i = 1 \sum n \frac{( x _{i} - x ˉ ) ^{2}}{n - 1} : 0.98176 \dots

0.98176 \dots

a r i t hm e t i c m e an 20, 18, 24, 16, 22, 26

17 c 3

mi d r an g e 5, 4, 2, 1, 1, 2, 10, 2, 3, 5

t hi r d q u a r t i l e 10, 50, 40, 70, 80, 95, 30

8 C 3