The average of integers between $-10$ to $10$ is . 

The marks of $14$ students in a science test out of $50$ are given below. $34, 23, 10, 45, 44, 47, 35, 37, 41, 30, 28, 32, 45, 39$. Find the mean mark.

The marks of $14$ students in a science test out of $50$ are given below. $34, 23, 10, 45, 44, 47, 35, 37, 41, 30, 28, 32, 45, 39$.

Find the minimum mark obtained.