The Sample Size Calculator helps researchers, analysts, and businesses determine the optimal number of observations needed for statistical accuracy. Whether conducting surveys, experiments, or market research, this tool ensures reliable results with minimal sampling error.

Key Features

✅ Supports Proportion & Mean-Based Calculations – Compute sample size for both categorical and numerical data.
✅ Customizable Confidence Levels – Choose 90%, 95%, or 99% confidence levels for precise estimations.
✅ Margin of Error Control – Adjust the acceptable margin of error for desired accuracy.
✅ Automatic Population Adjustment – Accounts for finite population size when applicable.
✅ PDF Report Generation – Export a detailed summary of sample size calculations.

Use Cases

📌 Survey & Market Research – Ensure representative sample sizes for polls and customer feedback.
📌 Academic & Scientific Studies – Plan experiments and research with statistically valid samples.
📌 Business Decision-Making – Gather enough data for accurate performance analysis.
📌 Healthcare & Epidemiology – Determine patient sample sizes for clinical trials.

How It Works

1️⃣ Select Calculation Type – Choose between Proportion-Based (percentage responses) or Mean-Based (numerical data).
2️⃣ Input Population Details – Enter total population size (if known) or use an infinite population model.
3️⃣ Set Confidence Level & Margin of Error – Define how precise the estimate should be.
4️⃣ Run Calculation – The tool computes the minimum required sample size for reliable results.
5️⃣ Download PDF Report – Export the calculations, including statistical formulas and justifications.

This tool simplifies statistical planning, helping users gather the right sample size for accurate and meaningful insights. 🚀