The value of -i-1nXi is -

The correct option is D nx #160; ∑_i=1^nX_i #160;= x_1 + x_2 + x_3 + x_4 + x_5 +...x_n = n x_1 + x_2 + x_3 + x_4 + x_5 +...x_nn = ...

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Variable Separable Method

The value of ...

Question

The value of $n \sum i = 1 X_{i}$ is :

\frac{¯ ¯ ¯ x}{2}

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2 ¯ ¯ ¯ x

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n ¯ ¯ ¯ x

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\frac{¯ ¯ ¯ x}{n}

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The value of $\sum_{i = 1}^{n} x_{i}$ is

x^{2} - 2 x - 3

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\sum_{i = 1}^{n} (x_{i} - 2) = 110

\sum_{i = 1}^{n} (x_{i} - 5) = 20.

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The mean deviation for n observations $x_{1}, x_{2}, . . . . x_{n}$ from their mean $¯ ¯¯¯ ¯ X$ is given by

1 - \frac{n}{1} \frac{(1 + x)}{(1 + n x)} + \frac{n (n - 1)}{1.2} \frac{(1 + 2 x)}{(1 + n x)^{2}} - \frac{n (n - 1) (n - 2)}{1.2.3} \frac{(1 + 3 x)}{(1 + n x)^{3}} + . . . . . .

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