The measure of the central tendency which is the middle value in a set of ordered data is:
C. Median.
<h2>Step-by-step explanation:</h2>
We know that a median of the data is calculated by firstly ordering the data either in increasing(ascending) or decreasing(descending) order and look for the value that lie in the middle of the data set.
In other words we may say that median is a value that is halfway to the set.
