Observations of a data are $28, 16, 9, 17, 82, 71, 41, 18, 25, 15$. Find the range of the data.

The following observations are arranged in ascending order:
$26, 29, 42, 53, x, x+2, 70, 75, 82, 93$
If the median is $65,$ find the value of $x$.

The expenditure of a family on different heads in a month is given below:

Head	Expenditure (in $Rs$)
Food	$4000$
Education	$2500$
Clothing	$1000$
House Rent	$3500$
Others	$2500$
Savings	$1500$

Draw a bar graph to represent the data above.

The class mark of the class $90-120$ is:

The mean of natural numbers between $1$ to $20$ which are multiples of $3$ is ..........

The marks obtained (out of $25$ marks) by $40$ students in an examination are as given below:
$\begin{array}{rrrrrrrrrr} 8, & 12, & 23, & 9, & 5, & 20, & 16, & 3, & 6, & 23 \\ 10, & 6, & 21, & 1, & 18, & 17, & 18, & 16, & 16, & 12, \\ 3, & 15, & 21, & 7, & 12, & 5, & 2, & 7, & 13, & 24, \\ 13, & 18, & 8, & 2, & 20, & 5, & 13, & 7, & 23, & 16 \end{array}$
Represent the data given above by a grouped frequency distribution table,taking the class intervals as $0-5, 5-10, \dots$ etc.