Hello,
you can perform an attribute MSA with 3 Operators and 9 Parts with 3 repeated assesments but this will not give you any confidence in the Assesment Process.
You need "enough" Parts --> Clear BAD, somewhat BAD, somewhat GOOD, Clear GOOD to see that you have enough Assesments to get an Idea how good your Attributive Assesment Process works:
- repeated aggreement within the Operators and the Reference
- repeated aggreement Operator with his own assesment
- repeated aggreement Operator with the other Operator
Attached File can be used for 9 Parts 3 Operators 3 Repeated Assesments.
B U T check the Confidence --> it gives you no valuable Prediction or assesment to the Aggreement Test.