# Sample Size Determination

Skill · Data Science, Analytics and AI/ML

Canonical page: https://career.thegoodapps.co/skills/sample-size-determination

Sample size determination is a statistical process used to calculate the minimum number of observations or participants needed in a study to detect an effect with a desired level of confidence and statistical power. Researchers, data scientists, and market analysts use formulas involving effect size, significance level, and variance to avoid underpowered studies or wasteful over-sampling. It is a foundational step in designing surveys, clinical trials, and A/B tests.

Related skills: [A/B Testing](https://career.thegoodapps.co/skills/a-b-testing), [Survey Design](https://career.thegoodapps.co/skills/survey-design)

## Open roles requiring Sample Size Determination (0)

None of the roles we have read name this skill yet. A large share of the visible corpus has not been parsed for skills, so this is at least as likely to be our backlog as the market's verdict.