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Measurement device change assessment

Assess comparability when an instrument, assay or device changes during collection.

Linear-model residual pattern review

Use residual diagnostics to investigate model specification rather than certify it.

Unequal-variance response plan

Choose an uncertainty method consistent with observed variance structure.

Continuous predictor shape specification

Preserve a defensible relationship for a continuous predictor.

Influential observation review

Distinguish data errors, unusual observations and model influence.

Model convergence investigation log

Resolve optimization warnings before interpreting fitted parameters.

Model complexity and overfitting plan

Plan model flexibility relative to the information available.

Validation split integrity record

Keep related observations and future information out of the wrong partition.

Cross-validation design worksheet

Choose resampling that matches the intended generalization question.

Prediction threshold selection contract

Separate choosing a decision threshold from evaluating its consequences.

Model recalibration decision plan

Define how a prediction model may be updated for a new setting.

Prediction error subgroup audit

Investigate whether predictive performance differs across relevant groups.