std 100,100,90,90,90,80,80,80,80,80,70

Solution

écart type

100, 100, 90, 90, 90, 80, 80, 80, 80, 80, 70

9.34198 \dots

étapes des solutions

Calculer la variance:

87.27272 \dots

Calculer

σ (X) = i = 1 \sum n \frac{( x _{i} - x ˉ ) ^{2}}{n - 1} : 9.34198 \dots

9.34198 \dots

95, 82, 77, 64, 100, 97, 95, 95, 81, 80, 80, 84, 98, 77, 61, 69, 71, 80, 100, 999

95, 45, 37, 82, 90, 100, 91, 78, 67, 84, 85, 85, 82, 91, 93, 92, 76, 84, 100, 59, 92, 77, 68, 88

95, 45, 37, 82, 90, 100, 91, 78, 67, 84, 85, 85, 82, 91, 93, 92, 76, 84, 100, 59, 92, 77, 68, 88

78, 80, 66, 68, 71, 64, 82, 71, 70, 65, 70, 75, 77, 86, 72

56, 61, 64, 48, 63, 60, 57, 65, 64, 60, 65, 68, 48, 64, 59, 59