Question 8956
mean = (add up the numbers)/(how many numbers you have.


you can work it out.


I shall re-write the numbers: 66,67,68,70,69,74,73,84,78,76,78 in numerical order, as:


66,67,68,69,70,73,74,76,78,78,84 


Right then, now for median and mode:

Median is the middle most number, when written in order: middle number is 73.


Mode = number that appears the most: it is 78, which appears twice.


jon.