Find the mean of the following data .

Class Interval	Frequency
$0-100$	$2$
$100-200$	$5$
$200-300$	$4$
$300-400$	$12$
$400-500$	$17$
$500-600$	$20$
$600-700$	$20$
$700-800$	$9$
$800-900$	$7$
$900-1000$	$4$

Q. The median of the following data is $525$. Find the values of $x$ and $y$, if the total frequency is $100$

Class interval	Frequency
$0-100$	$2$
$100-200$	$5$
$200-300$	$x$
$300-400$	$12$
$400-500$	$17$
$500-600$	$20$
$600-700$	$y$
$700-800$	$9$
$800-900$	$7$
$900-1000$	$4$

Q. The median of the following data in $525$. Find the missing frequency, if it is given that there are $100$ observations in the data:

Class interval	Frequency	Class interval	Frequency
0-100	$2$	500-600	$20$
100-200	$5$	600-700	$f_2$
200-300	$f_1$	700-800	$9$
300-400	$12$	800-900	$7$
400-500	$17$	900-1000	$4$

Q. The median of the following data is 525. Find the missing frequency, if it is given that there are 100 observation in the data:

Class interval	Frequency	Class interval	Frequency
0−100 100−200 200−300 300−400 400−500	2 5 f1 12 17	500−600 600−700 700−800 800−900 900−1000	20 f2 9 7 4

Q.

The median of the following data is 525. Find the missing frequency, if it is given that there are 100 observations in the data:
$\begin{array}{cccc}\text{Class interval}& \text{Frequency}& \text{Class interval}& \text{Frequency}\\ 0-100& 2& 500-600& 20\\ 100-200& 5& 600-700& f_2\\ 200-300& f_1& 700-800& 9\\ 300-400& 12& 800-900& 7\\ 400-500& 17& 900-1000& 4\end{array}$

Q.

The median of the following data is 525. Find the values of x and y, if the total frequency is 100.

$\begin{array}{cc}ClassInterval& Frequency\\ 0-100& 2\\ 100-200& 5\\ 200-300& x\\ 300-400& 12\\ 400-500& 17\\ 500-600& 20\\ 600-700& y\\ 700-800& 9\\ 800-900& 7\\ 900-1000& 4\end{array}$ [4 MARKS]