Sample Size Calculator
Calculate required sample size, margin of error, and confidence intervals for statistical studies. Supports batch processing, sensitivity analysis, parameter comparison, and interactive visualizations for data-driven decisions.
Key Features
- • Calculate required sample size for surveys
- • Margin of error calculation
- • Confidence interval estimation
- • Supports multiple confidence levels (90%, 95%, 99%)
- • Finite population correction support
- • Adjustable precision (decimal places)
- • Batch processing (CSV file or text input)
- • Sensitivity analysis (parameter variation)
- • Compare multiple parameter sets
- • Visualization (sample size curve & charts)
- • Frequency distribution of results
- • History tracking with export (CSV, JSON, PDF)
Use Cases
- • Survey design and research planning
- • Market research and polling
- • Academic and statistical studies
- • Data science and analytics
- • Business decision making
How It Works
- • Select calculation type (sample size, margin of error, or confidence interval)
- • Enter required parameters (population, confidence, margin, proportion)
- • Adjust precision for output accuracy
- • Run calculation to get statistical results
- • Use batch mode for multiple datasets
- • Analyze trends using charts and sensitivity tools
Calculator Settings
?Select the type of calculation.
?Number of decimal places for output.
Parameters
?Total population size (leave blank if unknown).
?Confidence level (e.g., 95 for 95%).
?Desired margin of error (e.g., 5 for ±5%).
?Expected proportion (e.g., 50 for 50%).
?Upload CSV with sets like: population,confidence,margin,proportion.
?Enter parameter sets separated by semicolons.