std 61,32,70,40,43,54,63,72,78,70,82,85,61,73

解答

标准差

61, 32, 70, 40, 43, 54, 63, 72, 78, 70, 82, 85, 61, 73

15.99931 \dots

求解步骤

计算方差:

255.97802 \dots

计算

σ (X) = i = 1 \sum n \frac{( x _{i} - x ˉ ) ^{2}}{n - 1} : 15.99931 \dots

15.99931 \dots

v a r ian ce 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5

11 C 3

m e d ian 9, 8, 6, 6, 8, 6, 3, 9, 4, 6

50 C 5

v a r ian ce 1, 1, 3, 3, 5, 5, 7, 7, 7, 9, 10