Lower Quartile Formula For Even Data. 19 20 21 23 23 24 25 27 31. F the frequency of relevant quartile class 7.
The interval where the first quartile lies has the cumulative frequency of 10. 25 of the measurements of the given dataset that are represented by q1 are not greater than the lower quartile then the 50 of the measurements are not greater than the median i e q2 and lastly 75 of the. If the size of the data set is even the median is the average of the middle 2 values in the data set.
The interquartile range iqr is the range in values from the first quartile q 1 to the third quartile q 3.
Median of the data set. If there is an even number of data items then we need to get the average of the middle numbers. Median middle value 22. There are four different formulas to find quartiles.
