Upper Quartile Formula For Even Numbers. Q3 is the upper quartile and n is the number of numbers in your data set. Formula for lower quartile q1 n 1 multiplied by 1 divided by 4 formula for middle quartile q2 n 1 multiplied by 2 divided by 4 formula for upper quartile q3 n 1 multiplied by 3 divided by 4.
To calculate the upper quartile first arrange the numbers of the data set in ascending order. Interquartile range q3 q1. Inter quartile range q3 q1 8 4 5 3 5.
5 7 2 6 middle quartile.
Interquartile range q3 q1. Interquartile range is calculated using the formula given below. 8 8 2 8 upper quartile. 5 7 2 6 middle quartile.
