Blood clotting data

A quality control manager in a hospital laboratory wants to assess the equipment that is used to measure blood clotting time. The manager selects blood samples that represent the expected range of the variation. Three technicians measure five samples twice, for a total of 30 measurements. Each sample is unique to the technician, that is, no two technicians measured the same sample.

You can use this data to demonstrate Nested Gage R&R Study.

Worksheet column Description
Sample The sample identifier
Technician The name of the technician who measures the clotting time
Clotting Time The clotting time in minutes
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