Answer & step-by-step explanation:
Let us find the median of the data set
First, you should arrange the data in ascending to descending to find the median.
4, 7, 10, 11, 11, 12, 16
Now let us use the given formula to find the median.

Here,
n → the number of elements
Let us find it now.

Let us find the mode of the data set.
Mode is the most frequent number in the data set.
∴ mode → 11
Let us find the mean of the data set
Mean is the average of a data set.
To find that, you have to add all the data together and divide it by number of elements.
Mean = Σx ÷ n
Mean = ( 10 + 11 + 4 + 7 + 12 + 11 + 16 ) ÷ 7
Mean = 71 ÷ 7
Mean = 10.14