domains / families / science / sample-size-basic

sample-size-basic

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Basic sample size estimator for clinical research planning. Computes per-group and total N for two-sample/paired t-tests, chi-square tests, and proportion comparisons, reporting alpha, power, effect size, and statistical assumptions summary for grant proposals and preliminary ...

When to use

• Use this skill when estimating sample size for grant proposals or preliminary study design.
• Use this skill when the user says "sample size", "power analysis", "how many subjects", or "n per group".
• Use this skill for basic t-test, chi-square, and proportion test sample size calculations.

When not to use

• requests outside the documented scope
• tasks requiring unsupported assumptions
• missing critical inputs

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