Math Problem Statement
اگر انحراف ۵ داده از میانگین آنها برابر ۳ , -۱ ، a ، ۲ , ۱ باشد واریانس داده ها چیست
Solution
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Math Problem Analysis
Mathematical Concepts
Statistics
Variance
Deviation from Mean
Formulas
Variance formula: \( \frac{1}{n} \sum (x_i - \bar{x})^2 \)
Variance based on deviations: \( \frac{1}{5} (3^2 + (-1)^2 + a^2 + 2^2 + 1^2) \)
Theorems
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Suitable Grade Level
Grades 9-12
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