Find the mean of the even numbers between $50$ and $70$.

Find the median: $4, 5, 10, 6, 7, 14, 9, 15$.

The weight of students (in kgs) in a class are as follows : $25, 27, 29, 32, 30, 28, 26, 31, 35, 41, 34$. Find its median.

In a Science quiz competition, one student of class $\mathrm{VIII}$ received the following marks $83, 61, 48, 73, 76, 52, 67, 61, 79$.

Find the median of the above marks.

Find the mode of the given data:

$$\begin{gathered} 7, 5, 99, 3, 1, 9, 7, 5, 3 \\ 1, 1, 9, 7, 7, 5, 5, 5, 3, 1 \\ 5, 3, 3, 1, 5, 7, 7, 9, 9, 1 \end{gathered}$$

Find the mode of the given distribution :

$5, 3, 2, 2, 4, 5, 3, 3, 4, 3, 5, 3$

Find the mean of the first five odd natural numbers.

The marks obtained by Geeta in the monthly test exams in Mathematics for $6$ months are as follows

Construct a pie-chart with the help of the above data.