# 8: Sample Size to Estimate a Population Proportion

Sample Size to Estimate a Population Proportion

This calculator computes the sample size needed to estimate a population proportion. Please report the error to Dr. Jessica Kuang at jkuangATvcccd.edu.

To learn how to use this calculator, please watch a short video here.

Input

Fill in the estimation for P (or choose no estimation for P), the error bound and the confidence level, then hit "Calculate " and the needed sample size will be calculated for you.

 No Estimate for p    Have Estimate for p Estimate for p (enter a decimal): Error Bound (enter a decimal): Confidence Level (enter a decimal):

Output

 Sample Size (n):