What is the median of the data set? {10, 15, 27, 33, 33, 36, 42, 47, 45, 56, 78}

The answer is 36 because it is in the middle of all the numbers. If the numbers weren't in order, you would have to put them in order from least to greatest, then find the center number. if there are two numbers, find the average of the two (add them up then divide by the number of numbers which would be two because you are trying to figure out the average of TWO numbers).