A sample of 15 students had data collected on their reading scores before and after a literacy intervention program was implemented. The degrees of freedom for this group would be 13.

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Quizplus · Accepted Answer

The degrees of freedom for a paired samples t-test (which is appropriate for before-and-after measurements on the same subjects) is calculated as n - 1, where n is the number of pairs. In this case, with 15 students (or pairs), the degrees of freedom would be 15 - 1 = 14.

A Sample of 15 Students Had Data Collected on Their