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Julie Jones gives an end-of-unit sixty-item exam to her fourth- graders, then re-administers the exam two weeks later, and correlates her pupils'...

Julie Jones gives an end-of-unit sixty-item exam to her fourth- graders, then re-administers the exam two weeks later, and correlates her pupils' scores on the two test administrations. what is the reliability?

(a) test-retest,

(b) equivalence,

(c) Internal consistency.

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