Sample size
The number of independent units contributing to an estimate.
What Sample size does not show
Large counts do not cure biased selection, duplication, or non-independence.
Where Sample size comes up on this site
- Core Web Vitals without CrUX: field data for small sitesThis guide explains why field data is missing, why lab data cannot fill the gap, and how to collect field data of your own that is honest about its sample size.
Definitions that name Sample size
Related terms in Measurement and evaluation
How a measurement earns trust: evaluation sets, error rates, calibration, reproducibility, and the biases that make a number look better than it is.
AI answer reading · name confusion · hedged answer · Benchmark · Evaluation set · Golden dataset · Ground truth · Human evaluation · LLM-as-judge · Pairwise evaluation · Pointwise evaluation · Rubric · Inter-rater agreement · Accuracy · F1 score · False positive rate · False negative · True positive · True negative · Calibration · Confidence score · Coverage · Abstention · Reproducibility · Repeatability · Variance · Confidence interval · Sampling bias · Selection bias · Survivorship bias · Data leakage · Test contamination
Questions about Sample size
What is Sample size?
The number of independent units contributing to an estimate.
What does Sample size not show or guarantee?
Large counts do not cure biased selection, duplication, or non-independence.
Which area of the glossary does Sample size belong to?
Measurement and evaluation: How a measurement earns trust: evaluation sets, error rates, calibration, reproducibility, and the biases that make a number look better than it is.
← Confidence interval · Sampling bias →
See it in the full glossary · 772 terms across 19 areas.
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