Find the mean and mode of $6, 11, 13, 12, 4, 2$.

The average marks of six students is $8$. One more student mark is added and the mean is still $8$. Find the student mark that has been added.

Calculate the mean, mode and median for the following data:

$22, 15, 10, 10, 24, 21$.

Find the median of the given data:

$14,-3, 0,-2,-8, 13,-1, 7$.

The daily wages of a worker for $10$ days is as follows. Find the average income of the worker.

If the mean of the following numbers is $38$ , find the value of $x$.

$48, x, 37,38,36,27,35,34,38,49,33$.