Sampling Frame Calculator
Calculate the design effect and effective sample size for cluster sampling designs. Understand how intraclass correlation and cluster size reduce your statistical power.
Inputs
Results
Design Effect (DEFF)
1.95
How to Use This Calculator
- Enter the total size of the sampling frame (all eligible units).
- Input the expected incidence rate - the percentage of contacts who qualify.
- Set the desired number of completed surveys.
- Review the Required Contacts to achieve your target and the Estimated Completion Rate.
- Adjust the incidence rate if screening is used to pre-qualify respondents.
Related Calculators
Margin of Error Calculator
Calculate the margin of error for your survey results based on sample size, confidence level, population size, and expected proportion.
Quota Sampling Calculator
Calculate the number of survey responses needed from each population stratum using proportional quota sampling. Ensures your sample mirrors the population composition.
Weighting Calculator
Calculate post-stratification weights to adjust your survey sample to match population proportions. See the weight for each stratum and overall weighting efficiency.
Survey Response Rate Calculator
Determine how many survey invitations you need to send to achieve your target number of completed responses, accounting for response and completion rates.