Mean Deviation about Median for Continuous Frequency Distributions

Q. If a variable takes discrete values $x+4,x-\frac{7}{2},x-\frac{5}{2},x-3,x-2,x+\frac{1}{2},x-\frac{1}{2},x+5(x>0),$ then the mean deviation about median is

1. $\frac{5}{4}$
2. $3$
3. $\frac{5}{2}$
4. $2$

Q.

Calculate mean deviation about median for following readings
$\begin{array}{ccccc}Class& 20-40& 40-60& 60-80& 80-100\\ F_i& 20& 44& 30& 40\end{array}$

1. 18.6

2. 18.7

3. 18.8

4. 18.9

Q. Find the Mean Deviation about median for the following data :

Class	0 - 10	10 - 20	20 - 30	30 - 40	40 - 50	50 - 60	60 - 70	70 - 80
frequency	5	8	7	12	28	20	10	10

Q.

Calculate mean deviation about median for following readings
$\begin{array}{ccccc}Class& 20-40& 40-60& 60-80& 80-100\\ F_i& 20& 44& 30& 40\end{array}$

1. 18.6

2. 18.7

3. 18.8

4. 18.9

Q. Find the mean deviation about median for the following data.

$CI$	$20-30$	$30-40$	$40-50$	$50-60$	$60-70$	$70-80$
$f$	$9$	$18$	$7$	$21$	$11$	$4$

Q. Find the mean deviation about the median for the data
$13,17,16,14,11,13,10,16,11,18,12,17$