Which of the following is true regarding the median of a dataset {x1,x2,...,xn}\{x_1, x_2, ..., x_n\}{x1,x2,...,xn}?
It is the value that minimizes ∑∣xi−k∣\sum |x_i - k|∑∣xi−k∣.
It is highly sensitive to extreme outliers.
It is always one of the values in the set if nnn is odd.
It is equal to the mean in all distributions.