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Calcimator

Data Science

Data science calculators for feature scaling, outlier detection, A/B testing, cohort analysis, and clustering quality.

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A/B Test Calculator

Determine statistical significance of A/B test results. Calculate z-score, p-value, conversion lift, and whether your variant beats the control at your chosen confidence level.

simple

Clustering Quality Score Calculator

Evaluate clustering quality using silhouette score, Calinski-Harabasz index, Davies-Bouldin index, and Dunn index from cluster distance metrics.

simple

Cohort Analysis Calculator

Analyze user cohort retention over time. Calculate monthly retention rates, churn rates, estimated customer lifetime value (LTV), and total cohort revenue.

simple

Confusion Matrix Analyzer

Analyze classification model performance from confusion matrix values. Calculate precision, recall, F1 score, MCC, accuracy, specificity, and more.

simple

Data Imputation Calculator

Estimate missing data values using mean, median, mode, or linear interpolation imputation methods. Compare imputation accuracy against actual values.

simple

Dimensionality Reduction Calculator

Determine how many principal components to retain based on eigenvalues and target explained variance. Includes scree plot data, Kaiser criterion, and cumulative variance analysis.

simple

Feature Scaling Calculator

Scale raw feature values using min-max normalization, z-score standardization, robust scaling, and max-abs normalization for machine learning preprocessing.

simple

Moving Average Calculator

Calculate Simple Moving Average (SMA), Exponential Moving Average (EMA), Cumulative Moving Average (CMA), and Weighted Moving Average from a series of data points.

simple

Outlier Detection Calculator

Detect outliers using IQR bounds, z-score bounds, and modified z-score methods. Determine whether a data point is an outlier using configurable thresholds.

simple

Time Series Decomposition Calculator

Decompose monthly time series data into trend, seasonal, and residual components using additive or multiplicative decomposition methods.

simple

SMA & EMA

5-point simple and exponential moving average for a mini price series.

simple