It is easy to get a median with an odd amount of numbers, as there will always be one number in the middle of the list. So, for example, if you have 7 numbers, n1, n2, n3, n4, n5, n6, n7, the 4th number is always the median, so n4 would be the median value in this case.
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Median is finding the center of a line of some values. The values have to list in ascending order. When there are an odd amount of numbers: the median is the middle number. Example: find the Median of {12, 3, 5}. Put them in order: {3, 5, 12}. The middle number is 5, so the median is 5. When there are an even amount of numbers: There will be two numbers in the middle; the median in this case is the mean (average) of these two. Example: find the Median of {3, 5, 7, 12, 13, 14, 21, 23, 23, 23, 23, 29, 40, 56}. There are now 14 numbers and so we have a pair of middle numbers and the middle numbers are 21 and 23. To find median: (21 + 23) ÷ 2 = 22. So the Median in this example is 22.
Every set of numbers has a median, so it can always be got. It is the middle value when they are arranged in numerical order. If there is an odd amount of numbers, then it is in the set, as there is one definite middle number. If there are an even amount of numbers, then you take the two middle numbers and find the value that is half way between them if they are different. You can also add the two numbers and divide by 2, which will also give you the median.
So the median of a set of numbers, is the number which is exactly in the middle of all the numbers when sorted. So take your set of numbers, {6,7,10,8,9,8} and sort them so we get {6,7,8,8,9,10} If we work in from the left and right removing one number at a time we get: {7, 8, 8, 9} and then {8, 8} Meaning the median is 8. (When you have an even amount of numbers, you have to average the two numbers remaing (in this case 8 and 8), however when you have an odd amount of numbers you will only have 1 left, and that is the median)
It gets the middle value of a list of values. If you have a list of numbers, it returns the middle value as if they were in numerical order. If there is an odd amount of numbers, then it will give you one of the numbers that is in the list. If there are an even amount of numbers, then it will give the number halfway in value between the two middle numbers.