Question

You are given the following list of values: 5.8, 6.1, 4.9, 10.9, 0.8, 6.1, 7.4, 10.2, 1.1, 5.2, 5.9 Which values are outliers?

Answer 1

To find the outlier your have to find the IQR( interquartile range), the upper fence and the lower fence. The IQR is the difference between the first and third Quartile. Q3(7.4) -Q1(4.9)= 2.5. Use the IQR to find the Upper fence and Lower fence.
Upper fence- (7.4)+1.5(2.5)= 11.15
Lower fence- (4.9)-1.5(2.5)= -1.15
Make sure your values are in the right order so you can see what numbers are below or above the Upper and lower fences. There are no outliers.