The Confidence Interval Calculator is a statistical tool designed to estimate the range within which a population parameter (such as mean or proportion) is likely to fall. It helps researchers, analysts, and students quantify uncertainty in their data and make data-driven decisions with confidence.

Key Features

✅ Supports Mean & Proportion Intervals – Calculate confidence intervals for both numerical and categorical data.
✅ Customizable Confidence Levels – Choose from 90%, 95%, or 99% confidence levels.
✅ Instant Calculation – Computes margin of error and confidence interval range in real-time.
✅ Graphical Representation – Visualize confidence intervals with dynamic charts.
✅ PDF Report Generation – Export detailed reports with calculations and visual summaries.

Use Cases

📌 Academic & Research Studies – Estimate population parameters from sample data.
📌 Business & Market Analysis – Measure consumer trends and forecast market behavior.
📌 Healthcare & Epidemiology – Determine confidence intervals for medical study results.
📌 Quality Control & Manufacturing – Assess process variations and reliability measures.

How It Works

1️⃣ Select Data Type – Choose between mean-based or proportion-based confidence intervals.
2️⃣ Enter Sample Data – Input sample size, mean (or proportion), and standard deviation.
3️⃣ Set Confidence Level – Select 90%, 95%, or 99% confidence intervals.
4️⃣ Run Calculation – The tool computes the confidence interval range and margin of error.
5️⃣ Review & Export Results – Visualize results and download a PDF report for documentation.

This tool simplifies statistical analysis by providing accurate confidence intervals for better decision-making. 🚀