Lower Quartile And Upper Quartile Formula. Lower quartile q1 n 1 1 4. Middle quartile q2 n 1 2 4.
25 27 2 26 upper quartile. Average of 7th and 8th terms. The formula for quartiles is given by.
Q2 is the median or 50.
The lower quartile is the median of the lower half of the data. Upper quartile q3 n 1 3 4. If there is an even number of data items then we need to get the average of the middle numbers. The frac.
