The mean deviation about the mean for the fol | vedclass

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(D) First,we calculate the class marks $(x_i)$ and the mean $(\bar{x})$:Class interval$x_i$$f_i$$f_i x_i$$|x_i - \bar{x}|$$f_i |x_i - \bar{x}|$$0-2$$1

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$\frac{20}{13}$

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(D) First,we calculate the class marks $(x_i)$ and the mean $(\bar{x})$:Class interval$x_i$$f_i$$f_i x_i$$|x_i - \bar{x}|$$f_i |x_i - \bar{x}|$$0-2$$1$$1$$1$$4$$4$$2-4$$3$$3$$9$$2$$6$$4-6$$5$$5$$25$$0$$0$$6-8$$7$$3$$21$$2$$6$$8-10$$9$$1$$9$$4$$4$Total$13$$65$$20$The mean is $\bar{x} = \frac{\sum f_i x_i}{\sum f_i} = \frac{65}{13} = 5$.The mean deviation about the mean is $\frac{\sum f_i |x_i - \bar{x}|}{\sum f_i} = \frac{20}{13}$.

Class Interval	$0-4$	$4-8$	$8-12$	$12-16$
Frequency	$4$	$3$	$2$	$1$

Class Interval	$0$–$2$	$2$–$4$	$4$–$6$	$6$–$8$	$8$–$10$
Frequency	$1$	$3$	$4$	$1$	$2$

The mean deviation about the mean for the following data is
Class interval Frequency
$0-2$ $1$
$2-4$ $3$
$4-6$ $5$
$6-8$ $3$
$8-10$ $1$

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Let $S$ be the set of all values of $a_1$ for which the mean deviation about the mean of $100$ consecutive positive integers $a_1, a_2, a_3, \ldots, a_{100}$ is $25$. Then $S$ is

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Class interval	Frequency
$0-2$	$1$
$2-4$	$3$
$4-6$	$5$
$6-8$	$3$
$8-10$	$1$

The mean deviation about the mean for the following data isClass intervalFrequency$0-2$$1$$2-4$$3$$4-6$$5$$6-8$$3$$8-10$$1$