Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 Mathematics Statistics Measures of Central Tendency

यदि X1, X2, X3, ..... Xn का माध्य X̅ है तो \(\rm \frac{\Sigma ^n}{e=1}(X_i-\bar X)\)= ?

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X̅ 
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nX̅ 
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