for a particular measurement process, there is one device and four technicians.

Question

for a particular measurement process, there is one device and four technicians. Design a study whose objective is to examine within technician-instrument variability, its magnitude, and stability.

A. Would you recommend using the same material during the study? Is that necessary?

B. Suppose it were not possible to use the same material during the course of the investigation. Would the consistency of the measurement process's ability to read to the same average be an issue? Why or why not?

C. How do potential drifts or shifts in average reported readings on the same material affect the study of within technician-instrument variability?

D. How would less or more precise technician methods be identified?

Explanation / Answer

A. Yea. I would recommend using same material because that will make the group as homogeneous as possible and we want sto study the variation between groups so it will be easier. Furthermore, it will reduce calculations. NO, it is not necessary. We can take different object and then test for variance.

B. Yes. If the same material is not used, there will be some fluctuations about the average. The reading will vary due to differences in material.

C. Yes. It will affect the study within tecnician instrument variability as the eroors arises are just random errors due to technician and instrument.

D. For the precision, we can compare the variances. The more precise method will have lesser variance and less precise methods will have larger variance. These will have nothing to do with accuracy. We just measure the variability of independent observation.

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