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Math worksheet guiding students through calculating standard deviation using a set of test scores.

Worksheet titled "9.4 Calculating Standard Deviation" with instructions and a table for calculating standard deviation from test scores.

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Show Answer Key & Explanations Step-by-step solution for: 9.4 - Standard - Deviation - Practice - Worksheet - IM - 3 | PDF ...

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- Mean: 60
- n: 10
- Test Score (x): 22, 99, 102, 33, 57, 75, 100, 81, 62, 29
- Difference from the mean (x - x̄): -38, 39, 42, -27, -3, 15, 40, 21, 2, -31
- (Difference from the mean)² (x - x̄)²: 1444, 1521, 1764, 729, 9, 225, 1600, 441, 4, 961
- Sum of (Difference from the Mean)²: 8798
- Variance: 8798 / 9 = 977.56
- Standard deviation: √977.56 = 31.27

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

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