A central tendency is a value that describes the center of a set and includes the mean, median, and mode.
Mean is Something which is intermediate or in the middle; an intermediate value or range of values; a medium..
Median The quantity or value at the midpoint of a set of values, such that the variable is equally likely to fall above or below it; the middle value of a discrete series arranged in magnitude (or the mean of the middle two terms when there is an even number of terms).
Mode is the most frequently occurring value in a distribution