Upper And Lower Quartile Formula Class 11. The lower quartile value is the median of the lower half of the data. To calculate the upper quartile first arrange the numbers of the data set in ascending order.
For example if the result is 825 then subtract 025 from 825 to get 8. Jun 28 2019 There are 11 values so we substitute 11 for n in the formula. For the case of a grouped-data distribution we can find the quartiles through the following steps Construct a cumulative frequency table for the given data alongside the given distribution From the total number of data values estimate the groupsclasses of the Lower and Upper Quartiles Use the following formulae to then calculate the quartiles.
Consider the following data.
This rule is employed by the TI-83 calculator boxplot and 1-Var Stats. 14 In addition to displaying and labeling outliers you may also label the most extreme cases that are not outliers one on each side since these are often worth special attention. Calculate the Median Lower Quartile Upper Quartile and Interquartile Range of the Following Data Set of Runs 19 21 23 20 23 27 25 24 31. A quartile divides the set of observation into 4 equal parts.
