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Worksheet for calculating variance and standard deviation using statistical formulas.

Table for calculating variance and standard deviation with columns for value, difference from the mean, and squared difference, including formulas for variance and standard deviation.

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Mean = 5, n = 5
Value | Difference from the mean (x - x̄) | (Difference from the mean)² (x - x̄)²
--- | --- | ---
3 | -2 | 4
4 | -1 | 1
5 | 0 | 0
6 | 1 | 1
7 | 2 | 4
Sum of (Difference from the Mean)² divided by degrees of freedom (n-1): 10 / 4 = 2.5. This is called variance.
Lastly,
Standard deviation = Square root of variance = √2.5 ≈ 1.58

Parent Tip: Review the logic above to help your child master the concept of standard deviation practice problems worksheet.

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