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Books by Fred Davidson

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  • - A Teacher`s Guide to Writing and Using Language Test Specifications
    by Fred Davidson & Brian K. Lynch
    £29.49

  • by Fred Davidson
    £100.49

    Fred Davidson demonstrates how to input, manipulate and debug data to make substantive analysis easier and more accurate. Davidson presents a situation or a problem, suggests how it might be resolved and demonstrates the implementation of each principle as it appears in the command languages of SAS and SPSS.

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