Do box plots show outliers?
Yes: If there are outliers in the data set, they should be included in the box plot.
If an outlier occurs, it is graphed on the box-and-whisker plot as a dot. For example, the outlier here is at the data value
NOTE : An outlier is not a minimum or maximum. If an outlier is the lowest point, then the 2nd lowest point will become the minimum. If an outlier is the highest point, then the 2nd highest point will become the maximum.