Where this lecture talks about enhancing the traditional crow’s foot notation with information about minimum, most likely and maximum cardinality of the thing on the “many” side of the relationship, it describes the “most likely” value as the “median”. I’m not sure this is the correct term. Given the sorted array
[0, 1, 2, 2, 2, 3, 3, 4, 5, 7, 10]
The median value in this array is the one which has an equal number of elements both before and after it. As it has 11 elements, that would be the one in the sixth position, i.e. 3.
If we really want the “most likely” value, shouldn’t we take the value which occurs the most times in the array, the mode, i.e. 2?
Sorry if this is a really picky point.