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Riley McDowell. Range and measures of centre Another word for the mean is the average, to find the mean you need to add up all the scores and divide them by how many there are. The mode is the most frequent score. There maybe more than one mode in a set of data The median is the middle score. To find the median you need to arrange them in ascending order and then pick the middle. The range indicates the spread of the data. To find the range you need to get the maximum score and minus it by the minimum.