A sample of 20 glass bottles of a particular type was selected, and the internal pressure strength of each bottle was determined. Consider the following partial sample information:
Median = 202.2
Lower fourth = 196.0
Upper fourth = 216.8
Three smallest observations ............ 125.8 ............. 188.1 ............. 193.7
Three largest observations ............... 221.3 ............ 230.5 ............. 250.2
a. Are there any outliers in the sample? Any extreme outliers?
b. Construct a boxplot that shows outliers, and comment on any interesting features.