Lower And Upper Quartile Formula. Average of 7th and 8th terms. Average of 2nd and 3rd terms.
First lets arrange of the values in an ascending order. It is divided into 3 points a lower quartile denoted by q1 which falls between the smallest value and the median of the given data set median denoted by q2 which is the median and the upper quartile which is denoted by q3 and is the middle point which lies between the median and the highest number of the given dataset of the distribution. 19 20 21 23 23 24 25 27 31.
N 1 1 4 th term is the lower quartile.
Average of 2nd and 3rd terms. Find the interquartile range and the quartile deviation for the given data in the table below. Use the methods above to find the upper quartile. If the size of the data set is odd do not include the median when finding the first and third quartiles.
