To find the lower quartile, find the median of the lower half of the data. The lower half cons can verify that n is odd for the lower half which means the median will be the single middle 19 26 30 41 43 46 48 Find the lower quartile. 37 5 X To find the upper quartile, find the median of the upper half of the data. The upper half cons you can verify that n is odd for the upper half which means the median will be the single mi 53 53 54 61 67 72 76 Find the upper quartile. 61 The interquartile range is a measure of variability that is resistant to outliers and is found as Interquartile range = upper quartile - lower quartile Find the interquartile range. Submit Skip (you cannot come back)