Sample ratio mismatch
id:
sample-ratio-mismatch-235-266768
title:
Sample ratio mismatch
text:
In the design of experiments, a sample ratio mismatch (SRM) is a statistically significant difference between the expected and actual ratios of the sizes of treatment and control groups in an experiment. Sample ratio mismatches also known as unbalanced sampling often occur in online controlled experiments due to failures in randomization and instrumentation. Sample ratio mismatches can be detected using a chi-squared test. Using methods to detect SRM can help non-experts avoid making discussions
brand slug:
wiki
category slug:
encyclopedia
description:
Statistical error
original url:
https://en.wikipedia.org/wiki/Sample_ratio_mismatch
date created:
date modified:
2023-08-26T02:06:38Z
main entity:
{"identifier":"Q118900121","url":"https://www.wikidata.org/entity/Q118900121"}
image:
fields total:
13
integrity:
14