Lower And Upper Quartile Range. The lower quartile q 1 is the median of the lower half of the data. When evaluating the quartiles always remember to first arrange the data in increasing order.
Use the methods above to find the upper quartile. The lower quartile q 1 is the median of the lower half of the data. This is the second quartile q 2.
N 1 1 4 th term is the lower quartile.
To find the lower quartile using the formula use q1 1 4 n 1 or enter 1 into the excel function instead of 3. Third one which is also referred to as upper quartile is equal to the data at the 75 th percentile of the given set. Use the methods above to find the upper quartile. First one q1 which is also called the lower quartile is equal to the data at the 25 th percentile of the given set.
