Method evidence record

Blocked A/B Test

A blocked A/B test is an experimental design that partitions units (users, subjects, or clusters) into homogeneous blocks before randomly assigning them to treatment A or treatment B within each block. Blocking reduces within-experiment noise by ensuring that known sources of variation — such as device type, geography, or user tenure — are balanced across conditions, yielding more precise estimates of the treatment effect than a simple unblocked A/B test.

Sources recorded, not reviewed

Source record

Citations copied verbatim from the method’s source record. No claim-level verification is inferred from them.

Blocked A/B Test (Block-Randomized Split Test)

Taxonomic method record · process-pipeline / experimental-design

Fisher, R. A. (1926). The arrangement of field experiments. Journal of the Ministry of Agriculture of Great Britain, 33, 503–513. · URL
Kohavi, R., Tang, D., & Xu, Y. (2020). Trustworthy Online Controlled Experiments: A Practical Guide to A/B Testing. Cambridge University Press. · ISBN 9781108724265

Open full method

Curated claims

Claims persisted in the evidence ledger, each with its own assessment.

No curated claims yet

This view does not invent a claim assessment when the ledger has none.

Related methods

Generated from the method graph and shown as machine-suggested relations — no evidence claim is inferred.

Taxonomic bucketBlocked Randomized Controlled Trialmachine-suggested · Relational suggestion, not evidence.Taxonomic bucketFactorial A/B Testmachine-suggested · Relational suggestion, not evidence.Taxonomic bucketMulti-arm experimentmachine-suggested · Relational suggestion, not evidence.Used in the same domainRandomized Controlled Trialmachine-suggested · Relational suggestion, not evidence.