how many outliers do these data contain?
4, 45 , 46, 25, 34, 73, 37, 33, 42, 40, 37, 34, 49, 46, 45
4, 45 , 46, 25, 34, 73, 37, 33, 42, 40, 37, 34, 49, 46, 45