Sample Size Calculator

All methods

Continuous outcomes — Means

Use when the outcome is measured on a continuous scale — weight, antibody titre, milk yield, blood pressure, days to recovery — and the quantity of interest is an average or a difference between averages, whether across two groups, several groups, or repeated measurements on the same units.

6 methods

Continuous outcomes — Means

  1. 1 Single mean — precision / confidence interval
  2. 2 Single mean — hypothesis test
  3. 3 Two independent means
  4. 4 Paired means
  5. 5 Multiple independent means — one-way ANOVA
  6. 6 Repeated-measures / mixed ANOVA