Sample Proportion Calculator

Calculate proportions and margins of error

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About Sample Proportion Calculator

This calculator helps you find the sample proportion, standard error, margin of error, and confidence interval bounds based on the number of successes, total sample size, and your chosen confidence level.

Sample Proportion Calculator Features

  • Computes sample proportion (p-hat)
  • Calculates margin of error using critical Z-values
  • Displays full confidence intervals

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