Calibration with BIB - Balanced Incomplete Blocks

[Pedro Henrique Araujo]

Dear Phil and partners,

I would like to know how I calibrate the items when I have 3 test books with 10 items each and with two items in common between them.

Ex.

TB1 and TB2 common items 5 and 6.

TB2 and TB3 common items 7 and 8.

TB3 and TB1 common items 1 and 2.

Thank you very much

[Phil Chalmers]

Look into the multipleGroup function. You'll want to treat the common items as anchor items across groups, and there will be a good degree of NA values for items that were not answered. 

Phil

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