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Statistical Power

Definition
AI-generated

Statistical power is the probability that a test rejects the null when it is false (1 minus Type II error rate).

Topics
Probability and inference
Related
Effective Sample Size Genome-Wide Association Study (GWAS) Minor Allele Frequency (MAF)

Why it matters in GWAS

Underpowered studies miss true associations; understanding power guides cohort design, replication, and interpretation of null results at a given sample size.

Example usage

"The analysis uses Statistical Power to quantify associations and compare alternative hypotheses."

Effective Sample Size Genome-Wide Association Study (GWAS) Minor Allele Frequency (MAF) Winner's curse
Related-term network

Click any node to open that term page.

Node order. The current term is first. Next come every page linked from Related terms, in the same top-to-bottom order as that list. Then new terms appear in two-hop layers: for each of those direct neighbors (in that same order), their related terms are appended if not already listed. A third pass does the same for two-hop nodes. The walk stops when a fixed maximum number of nodes is reached.

References

  • Sham PC, Purcell SM. (2014). Statistical power and significance testing in large-scale genetic studies. Nat Rev Genet.
  • GWASTutorial: Power analysis for GWAS.
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