The mean deviation about the median for the following data $6, 3, 4, 9, 2, 7, 11$ is

The mean deviation about the mean of the following data is nearly:

Size $(x)$	$1$	$3$	$5$	$7$	$9$	$11$	$13$	$15$
Frequency $(f)$	$3$	$3$	$4$	$14$	$7$	$4$	$3$	$4$

Consider the following distribution:

$x_i$	$2$	$4$	$6$	$8$	$10$
$f_i$	$1$	$2$	$3$	$2$	$1$

The sum of the mean deviation from the mean and the mean deviation from the median of this distribution is:

The mean deviation from the mean for the data $6, 7, 10, 12, 13, 4, 12, 16$ is

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

If $\alpha \neq 0$ and the mean deviation of the observations $\{k \alpha\}$ for $k=1, 2, \ldots, 50$ about its median is $50$,then $|\alpha|=$