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Practice
Explain outlier influence
Why is the mean 7.375 hours while the median is 4.5 hours in the response-time sample?
Response-time distribution
Most tickets cluster below seven hours, with one long delay
Ordered response hours
Ticket 12 h
Ticket 23 h
Ticket 34 h
Ticket 44 h
Ticket 55 h
Ticket 65 h
Ticket 76 h
Ticket 830 h
The 30-hour observation creates a long right tail. Investigate it before deciding whether it is an error, exception, or valid rare case.