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Nov 21, 2014 1:53 AM
(840 views)

Hi,

I am not sure I understand why the example dataset called "3 Factors nested" has indeed data from a nested factorial design. The way I see it is that all "parts" are measured by all "operators" with all "instruments".

I hope anyone can share some comments.

Best,

Dave

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Solution

Each operator gets a different set of parts to measure. Part **1** for Sally is not the same as part **1** for any of the other operators. Part 1 is merely the first part measured by each operator.

Learn it once, use it forever!

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Each operator gets a different set of parts to measure. Part **1** for Sally is not the same as part **1** for any of the other operators. Part 1 is merely the first part measured by each operator.

Learn it once, use it forever!

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Nov 24, 2014 12:27 AM
(706 views)

Thanks Mark, that seemed to be the most reasonable question, I just couldn't find a description of the dataset.

Related to this, if I divide a liquid sample into three tubes, and ask each of three operators to measure concentration of one of them only, should I say that sample is nested in operator?

Dave