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

If mean of X1, X2, X3, ..... Xn is X̅ then \(\rm \frac{\Sigma ^n}{e=1}(X_i-\bar X)\)= ?

1
0
2
X̅ 
3
nX̅ 
4
1
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