Find the mean deviation from the median for the following data:

Age (years)	$20-25$	$25-30$	$30-35$	$35-40$	$40-45$	$45-50$	$50-55$	$55-60$
No. of workers $\left(f_i\right)$	$120$	$125$	$175$	$160$	$150$	$140$	$100$	$30$

The probability distribution of random variable $X$ is given by:

Let $p=P(1<X<4\mid X<3)$. If $5p=\lambda K$, then $\lambda$ is equal to

Find the mean deviation about median for the following continuous distribution:

$\begin{array}{cc}\text{ Marks Obtained }& \text{ No. of Boys }\\ 0-10& 6\\ 10-20& 8\\ 20-30& 14\\ 30-40& 16\\ 40-50& 4\\ 50-60& 2\end{array}$

Find the mean deviation about the mean for the following data :

$3,6,10,4,9,10$

Find the mean deviation about the mean for the following data:

The approximate value of the mean deviation about the mean for the following data is

Find the mean deviation from the mean of the following discrete data:

$3, 6, 10, 4, 9, 10$

What is the mean deviation about the mean for the following data?

Find the mean deviation from the mean of the following data, using the step deviation method :

$\begin{array}{|cc|}\hline \text{ Marks }& \text{ No. of Students }\\ 0-10& 6\\ 10-20& 5\\ 20-30& 8\\ 30-40& 15\\ 40-50& 7\\ 50-60& 6\\ 60-70& 3\\ \hline\end{array}$

Find the mean deviation about the median for the following data:

$4,6,9,3,10,13,2$

Find the mean deviation about the mean for the following data:

$\begin{array}{|lccccc|}\hline \text{ Marks obtained }& 0-10& 10-20& 20-30& 30-40& 40-50\\ \text{ No. of students }& 5& 8& 15& 16& 6\\ \hline\end{array}$