Universal core tier intermediate Reliability 85/100

Confidence Interval Generator

Pinpoint probability ranges for smarter predictions.

95% Standard Confidence Level

Overview

This pillar quantifies uncertainty by calculating a statistically probable range around a point estimate. It helps you move beyond a single prediction to understand the likely boundaries of an outcome, which is crucial for pricing risk.

What It Does

The Confidence Interval Generator takes a central forecast, like an average price prediction, and analyzes its historical volatility or simulation data. It then applies statistical formulas to establish upper and lower bounds for an outcome at a specified confidence level, such as 95%. This creates a data-driven range rather than a simple, single-point guess.

Why It Matters

Prediction markets often misprice the likelihood of an outcome falling within a certain range. This pillar provides a statistical edge by identifying when a market's implied range is too narrow or too wide, creating opportunities for profitable trades on volatility and certainty.

How It Works

First, a point estimate for an event is established from another model or consensus data. Second, the standard error is calculated based on historical data volatility or simulation results. Finally, using a selected confidence level, it calculates the interval by adding and subtracting the margin of error from the point estimate.

Methodology

Calculates a confidence interval using the formula: CI = Point Estimate ± (Z-score * Standard Error). The Z-score is determined by the desired confidence level, for example 1.96 for 95% confidence. The Standard Error is derived from the standard deviation of historical data over a defined lookback period or from the output of a Monte Carlo simulation.

Edge & Advantage

This provides a clear statistical basis for trading on range, over/under, or spread markets, moving beyond gut feelings about volatility.

Key Indicators

  • Confidence Bounds

    high

    The upper and lower values of the calculated range at a given confidence level (e.g., 95%).

  • Standard Error Estimate

    high

    Measures the statistical accuracy of an estimate. A smaller value means a tighter, more precise range.

  • Interval Width

    medium

    The absolute difference between the upper and lower bounds, indicating the expected market volatility.

Data Sources

  • Historical Market Data

    Provides price or outcome history used to calculate standard deviation and volatility.

  • Forecast Model Outputs

    Supplies the central point estimate around which the confidence interval is built.

Example Questions This Pillar Answers

  • Will Bitcoin's price be between $65,000 and $70,000 on July 1st?
  • Will the S&P 500 close up or down by more than 1.5% tomorrow?
  • Will the total points scored in the upcoming Lakers vs. Celtics game be over or under 225.5?

Tags

statistics probability range-betting volatility risk-management quantitative

Use Confidence Interval Generator on a real market

Run this analytical framework on any Polymarket or Kalshi event contract.

Try PillarLab