How do you know whether to calculate the discrimination index (which contrasts extreme groups), the biserial correlation,

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How do you know whether to calculate the discrimination index (which contrasts extreme groups), the biserial correlation, or the point biserial correlation coefficient as your item discrimination statistic?

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Measurement Theory In Action

ISBN: 9780367192181

3rd Edition

Authors: Kenneth S Shultz, David Whitney, Michael J Zickar

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Question Posted: Jan 10, 2024 02:13 AM

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How do you know whether to calculate the discrimination index (which contrasts extreme groups), the biserial correlation,

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Not that long ago contrasting groups was a popular method of determining how discriminating an item ...View the full answer

Measurement Theory In Action

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