The value of - ni-1 x1 -x- where x- is the arith metic mean of xi is

The correct option is B 0The #160; x̅=x_1/1 Then #160; ∑_i=1^n(x_1 x̅)=x̅ x̅=0 #160; ...

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Standard XII

Mathematics

Mean

The value of ...

Question

The value of $n \sum i = 1 (x_{1} - ¯ x)$ where $¯ x$ is the arith metic mean of $x_{i}$ is

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n ¯ x

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none of these

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Solution

The correct option is B 0
The $¯ x = \frac{x_{1}}{1}$
Then $\sum_{i = 1}^{n} (x_{1} - ¯ x) = ¯ x - ¯ x = 0$

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The value of n∑i=1(x1−¯x) where ¯x is the arith metic mean of xi is

The correct option is B 0The ¯x=x11Then ∑ni=1(x1−¯x)=¯x−¯x=0

The value of $n \sum i = 1 (x_{1} - ¯ x)$ where $¯ x$ is the arith metic mean of $x_{i}$ is

The correct option is B 0
The $¯ x = \frac{x_{1}}{1}$
Then $\sum_{i = 1}^{n} (x_{1} - ¯ x) = ¯ x - ¯ x = 0$