Calculate the optimal sample size for surveys with confidence
Determining the right sample size is crucial for surveys to achieve reliable and statistically significant results. A larger sample size generally provides more accurate results, but it also increases the cost and complexity of the survey.
The sample size depends on several factors including the population size, confidence level, margin of error, and the variability within the population. This calculator helps you determine the optimal sample size based on these parameters.
For more information on survey methodology and statistical analysis, you can refer to resources like Wikipedia or statistical guides from EPA.
| Population Size | Confidence Level | Margin of Error | Sample Size |
|---|---|---|---|
| 1000 | 95% | 5% | 278 |
| 10000 | 95% | 5% | 370 |