Free research tools · Page 11
Search and filter all free research toolsCategory Diversity Summary
Describe categorical distributions with Shannon entropy and effective category counts.
Binary Prediction Score Audit
Compute a binary Brier score from groups sharing an identical predicted probability.
Paired Mean Confidence Interval
Calculate a two-sided 95% t interval from the mean and SD of within-pair differences.
Rounded Percentage Count Checker
Find integer event counts compatible with a stated percentage and half-up rounding.
Standardized Covariate Balance Explorer
Compare continuous and binary baseline covariates with explicit standardization denominators.
Logistic Interaction Scenario Explorer
Translate four specified logit coefficients into probabilities and contrasts for two binary predictors.
Monte Carlo Precision Planner
Audit simulation probability precision and plan a conservative number of independent replicates.
Affine Summary Conversion Checker
Transform a mean, SD, variance and interval endpoints with an explicit linear unit conversion.
Missing Binary Outcome Bounds
Bound group risks and their difference by assigning every unresolved binary outcome in both directions.
Survival Risk-Set Reconciler
Reconcile ordered event, censoring and entry counts and audit product-limit survival steps.
Wilson Proportion Interval Calculator
Estimate a binomial proportion and an approximate 95% Wilson score interval, including zero-event samples.
Odds Ratio Interval Calculator
Audit a crude odds ratio and approximate log-Wald interval from four positive independent-group cell counts.