Abstract
Although Camp's tetrachoric correlation approximation has been shown to yield excellent results over a fairly wide range, its derivation remains something of a mystery. The present article shows how Camp might have arrived at his formula using a theoretical, rather than an empirical, approach.
| Original language | English |
|---|---|
| Pages (from-to) | 631-636 |
| Journal | Educational and Psychological Measurement |
| Volume | 57 |
| Issue number | 4 |
| Publication status | Published (in print/issue) - Aug 1997 |
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