Respuesta :

put all numbers in order from least to greatest
median is the middle number
so
5,9,10,11,12,14
median = ( 10+11)/2 = 10.5

answer
C. 10.5
1st ordered them from smallest to greater:

5  9  10  11  12  14.
         ====

Since we have an even data points (6), then we should take the average 

of 10 and 11. to find the median

(10+11)/2 = 10.5 (3rd answer)