The homework–achievement relation reconsidered: Differentiating homework time, homework frequency, and homework effort

Missing data: Our view of the state of the art.

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Analysis of Incomplete Multivariate Data

David E. Booth, Joseph L. Schafer · Technometrics · 2000 · 5.7K citations

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Within-group agreement, non-independence, and reliability: Implications for data aggregation and analysis.

Paul D. Bliese · 2000 · 3.4K citations

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A comparison of inclusive and restrictive strategies in modern missing data procedures.

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Does Homework Improve Academic Achievement? A Synthesis of Research, 1987–2003

Harris Cooper, Jorgianne Civey Robinson, Erika A. Patall · Review of Educational Research · 2006 · 1.2K citations

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