To calculate the sample size needed for a survey to estimate a proportion, the population standard deviation σ must be known.

Question

Quizplus · Accepted Answer

The sample size needed for a survey to estimate a proportion depends on several factors, including the desired level of precision, the expected proportion, and the confidence level. The population standard deviation is not a necessary input for sample size calculations for estimating a proportion.

To Calculate the Sample Size Needed for a Survey to Estimate