what is the upper quartile
Upper Quartile Definition. The Upper Quartile is the median of the upper half of a data set. This is located by dividing the data set with the median, and then dividing the upper half that remains with the median again, this median of the upper half being the upper quartile.esson Summary. The upper quartile of a data set, or Q3, is the median of the upper half of the data set. The term number of Q3 can be found using the formula. Once the term number is found with the formula, the term can then be located from the data set.