Calculate Chi-Square (χ²) test of independence and Goodness of Fit.
Bootstrap Resampling Calculator – Monte Carlo Confidence Intervals
Perform non-parametric Monte Carlo bootstrap resampling with replacement to estimate standard error, bias, and 95% percentile confidence intervals.
Binomial Distribution Calculator – Free P(X = x), Cumulative & Mean/SD
Compute exact and cumulative binomial probabilities and expected values.
Bayesian Inference Prior-Posterior Calculator
Calculate prior, likelihood, and posterior distributions with interactive conjugate Beta-Binomial updating, Maximum A Posteriori (MAP), and Bayesian credible intervals.
Bayes Theorem Calculator – Prior to Posterior Probability
Calculate Bayes' Theorem probability online. Convert prior probability to posterior probability with sensitivity, specificity, PPV, NPV, and natural frequency tree.
ANOVA Calculator – One-Way Analysis of Variance F-Test
Free One-Way ANOVA Calculator online. Calculate F-statistic, p-value, degrees of freedom, SSB, SSW, and MS values. Test mean differences across 3+ groups.
Absolute Value Equation Solver | Positive & Negative Branch Solutions
Solve |ax + b| = c and dual absolute value equations with positive/negative case splits and interval solutions.
Webinar Funnel Conversion Calculator | Free Online Marketing Tool
Calculate webinar registration conversion rate, attendee show-up rate, sales pitch conversion rate, attendee value, and pipeline revenue.
Viral Coefficient (K-Factor) Calculator | Free Online Marketing Tool
Calculate Viral Coefficient (K-Factor), referral invite conversion rates, viral cycle times, and exponential organic user growth trajectories.
Video Ad Completion & CPV Calculator | Free Online Marketing Tool
Calculate Video Completion Rate (VCR), Cost Per View (CPV), Cost Per Completed View (CPCV), and analyze quartile drop-offs (25%, 50%, 75%, 100%).