The value of -i-ln xi-x- -where x- is the arithmetic mean of xi is

The correct option is A 0Mean of the data is the number such that nbsp; nbsp; x_i x̅ gives half of the numbers on either side of the mean when drawn o ...

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Standard XII

Mathematics

AM,GM,HM Inequality

The value of ...

Question

The value of $\sum_{i = l}^{n} (x_{i} - ¯ x)$ ,where $¯ x$ is the arithmetic mean of $x_{i}$ is

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¯ x

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None of these

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Solution

The correct option is A 0
Mean of the data is the number such that $x_{i} - ¯ x$ gives half of the numbers on either side of the mean when drawn on the number line. After adding all these numbers will give the sum as zero.

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Similar questions

Q. The value of

n \sum i = 1 (x_{1} - ¯ x)

where

¯ x

is the arith metic mean of

x_{i}

The mid - points of class intervals $x_{i}$ along with respective frequencies $f_{i}$ for recorded observations are given. Calculate the mean deviations about mean $¯ ¯ ¯ x$

For the given distinct values $x_{1}, x_{2}, x_{3}, . . . . . x_{n}$ occurring with frequencies $f_{1}, f_{2}, f_{3}, . . . f_{n}$ respectively. The mean deviation about mean where $¯ ¯ ¯ x$ is the mean and N is total number of observations would be

Q. Mean deviation about the mean

¯ x

of the variate x is

\frac{2}{N} [¯ x \sum x_{i} < ¯ x f_{i} - \sum x_{i} < ¯ x f_{i} x_{i}]

. If this is true enter 1 , else enter 0

I f t h e m e a n o f t h e s e t o f n u m b e r x_{1}, x_{2} . . . x_{n} i s ¯ x, t h e n t h e m e a n o f t h e n u m b e r x_{i} + 2 i, 1 \leq i \leq n i s :

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The value of ∑ni=l(xi−¯x),where ¯x is the arithmetic mean of xi is

The correct option is A 0Mean of the data is the number such that xi−¯x gives half of the numbers on either side of the mean when drawn on the number line. After adding all these numbers will give the sum as zero.

The value of $\sum_{i = l}^{n} (x_{i} - ¯ x)$ ,where $¯ x$ is the arithmetic mean of $x_{i}$ is

The correct option is A 0
Mean of the data is the number such that $x_{i} - ¯ x$ gives half of the numbers on either side of the mean when drawn on the number line. After adding all these numbers will give the sum as zero.