Sample size calculator

A sample size calculator is a tool that helps determine the number of people needed in a study or survey to get accurate, reliable results. It considers factors like the desired level of confidence (how sure you want to be), the acceptable margin of error (how close the results should be to the true value), and the expected variability in responses. By calculating the right sample size, it ensures that findings are representative of the larger population without gathering more data than necessary, saving time and resources while maintaining accuracy.