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Item #	Description	Price
001	True Score Equating Workbook IRT true score equating is one of the most popular equating methods in use today. Now, with our true score equating workbook, you can learn to do it, too! This package includes: Excel workbook with fully functional macros Technical documentation User's guide Sample data	$25.00
002	Observed Score Equating Workbook IRT observed score equating is a powerful tool, but out of the reach of all but the most advanced practitioners. Or at least it was. Now you cam master the technique. This package includes: Excel workbook with fully functional macros Technical documentation User's guide Sample data	$25.00
003	Mean-Sigma Scaling Workbook Here's a simple technique you'll master quickly, once you see how it's done. This package includes: Excel workbook with fully functional macros Technical documentation User's guide Sample data	$10.00
004	TCC Scaling Workbook Here's a popular scaling technique, employing an algorithm with numerous applications. Package includes: Excel workbook with fully functional macros Technical documentation User's guide Sample data	$25.00
005	CDF Scaling Workbook Sometimes you just can't come up with those common item blocks. Well, now you don't have to! Scale even with common items, using common people or even just randomly equivalent groups. This package includes: Excel workbook with fully functional macros Technical documentation User's guide Sample data	$25.00
006	CBT Workbook Administering an adaptive test, complete with item selection, scoring, exposure control, and content control is an enormously complicated and difficult task. But with our CBT package you can learn how to do it. This package does not provide the capability to actually administer items, but it does include: Excel workbook with fully functional macros Options for b-matching and item information item selection Content and exposure control, handling sets Technical documentation User's guide Sample data	$100.00
007	Ability Distribution Workbook You would be amazed at how useful this algorithm is. Not only is it embedded in the E-step of calibration routines based on the EM algorithm, it's at the heart of our DIF methodology, as well as our option curve analysis methodology. This package includes: Excel workbook with fully functional macros Includes data generation routine Technical documentation User's guide Sample data	$25.00
008	Calibration Workbook Imagine being able to conduct a complete IRT item calibration from within an Excel workbook! Well, it's not just a dream. Here it is. This package includes: Excel workbook with fully functioning calibration routines based on the EM algorithm Includes data generation routine Technical documentation User's guide Sample data	$150.00
009	Assessing Fit Workbook A calibration is only as good as the fit of the model to the data. Here's how we at Tamabilt evaluate fit. This package includes: Excel workbook with fully functioning macros Technical documentation User's guide Sample data	$15.00
010	Option Curves Workbook A calibration is only as good as the fit of the model to the data. In the same vein, an item is only as good as its options. Here's how we at Tamabilt evaluate item options. This package includes: Excel workbook with fully functioning macros for constructing option curves Also computes option statistics! Technical documentation User's guide Sample data	$35.00
011	Scoring Workbook Maximum likelihood scoring is all the rage these days, and here we provide two different ways to do it. This package includes: Excel workbook with fully functioning macros for maximum likelihood scoring Brute force and Newton-Raphson algorithms! Technical documentation User's guide Sample data	$25.00
012	Simulations Workbook Conduct your own simulations study using our fixed effects study design. This package includes: Excel workbook with fully functioning macros for performing simulations Excel macro for performing maximum likelihood scoring Technical documentation User's guide Sample data	$25.00

• The Psychometrician's Handbook
• Toolbox Jr.
• Toolbox Sr.