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Field
Last Published
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Before
January 25, 2017 01:08 PM
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After
January 25, 2017 02:02 PM
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Field
Planned Number of Observations
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Before
Approximately 600 students, although this may depend on registration and course drop patterns after the semester begins. In some estimations we will use two observations per student (for midterm and final exams), but the
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After
Approximately 600 students, although this may depend on registration and course drop patterns after the semester begins. In some estimations we will use two observations per student (for midterm and final exams) or estimate directly on question-level outcomes (as detailed in the full analysis plan).
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Field
Power calculation: Minimum Detectable Effect Size for Main Outcomes
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Before
0.031 standard deviations in test score in reduced form estimates
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After
0.03 standard deviations in test score in reduced form estimates
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