Answer:
mode = 15 miles
Explanation:
the mode of a data set is the value that occurs most often
given the data set
12 , 12 , 14 , 15 , 15 , 15 , 17 , 18 , 19 , 21 , 23 , 29
the value that occurs most often is 15 ( 3 times ) , then
8.7m questions
11.3m answers