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12 questions from this quiz
How far values are from the mean
Data clustered close to the mean
σ\sigmaσ (sigma)
68%
95%
99.7%
Between 169 cm and 185 cm
6 steps
Calculate the mean xˉ\bar{x}xˉ
σ=Σ(x−xˉ)2n\sigma = \sqrt{\frac{\Sigma(x - \bar{x})^2}{n}}σ=nΣ(x−xˉ)2
σ=Σf(x−xˉ)2Σf\sigma = \sqrt{\frac{\Sigma f(x - \bar{x})^2}{\Sigma f}}σ=ΣfΣf(x−xˉ)2
Cannot be negative
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