How Is Median Calculated From Grouped Data?
The median is the data score in the exact middle of ordered data. So, first order the data into numerical order such that the smallest number is first and the largest is last. Then, find the number exactly in the middle. Ex. data: 1, 4, 7, 10, 14, 17,19, 25, 28, 35, 37 My median is 17, because it is right in the middle. If there is a really large number of data points, you could take n (the number of data you have, if you have 54 test scores, your n is 54), add 1 and divide by 2, when all the data points are ordered as described above, the nth data point will be your median ex.
