Eventually he moved to the Purdue University , where he became Professor of Statistics and Courtesy Professor of Computer Science .
After graduation Cleveland started at Bell Labs , where he was staff member of the Statistics Research Department and Department Head for 12 years .
Eventually staff member moved to the Purdue University , where staff member became Professor of Statistics and Courtesy Professor of Computer Science .
After graduation Cleveland started at Bell Labs , where he was staff member of the Statistics Research Department and Department Head for 12 years .