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प्रश्न
Find the Standard Deviation of the following data: 14, 22, 9, 15, 20, 17, 12, 11.
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उत्तर
σ = `sqrt(((sum(x - barx)^2)/"n"))`
= `sqrt(426/9)`
= `sqrt(47.33)`
∴ σ = 4.18
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