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Analysis Workbench

Every analysis in SVEND, searchable — 165 available today of 187 catalogued, across 25 families: statistical process control and control charts, process capability, Gage R&R and measurement system analysis, hypothesis testing and regression, design of experiments, reliability and Weibull, time series and forecasting, and Bayesian methods alongside their classical counterparts. Each one runs against the same engine and reports the same contract — a verdict, the statistics behind it, and a chart. Statistical results are calibrated against NIST Statistical Reference Datasets, and SPC is cross-checked against R’s qcc package. See the data import and export reference for the supported CSV, spreadsheet-paste, Excel export, and JSON paths.

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III Analysis Index

▼ Statistical Process Control 22
I-MR Chart Individuals and moving range for single observations Available
X-bar R Chart Subgroup means and ranges Available
X-bar S Chart Subgroup means and standard deviations Available
P Chart Proportion nonconforming Available
NP Chart Count nonconforming (fixed sample size) Available
C Chart Count of defects per unit Available
U Chart Defects per unit (variable sample size) Available
CUSUM Chart Cumulative sum for small shift detection Available
EWMA Chart Exponentially weighted moving average Available
Process Capability Cp, Cpk, Pp, Ppk with spec limits Available
Capability (percentile method) Cnp and Cnpk from the distribution's own percentiles — ISO 22514-2 §6.1.1, admissible under every process model Available
Capability Sixpack Control chart and capability composed on one sheet Available
Laney P' Chart Overdispersion-corrected proportion chart Available
Laney U' Chart Overdispersion-corrected defect-rate chart Available
Moving Average Chart Smoothed control chart over a sliding window Available
Zone Chart Cumulative zone-score control chart Available
MEWMA Chart Multivariate EWMA for several correlated measurements Available
Generalized Variance Chart Multivariate dispersion (|S|) over subgroups Available
Conformal Control Chart Distribution-free control limits via conformal prediction Available
Capability Degradation Cpk tracked over a sliding window to detect drift Available
Bayesian Cpk Trajectory Rolling posterior Cpk over a sliding window with trend detection Available
Drift Decomposition Isolate whether drift is location, scale, or shape change (before vs after window) Available
▼ Hypothesis Testing 22
1-Sample t-Test Test mean against a known value Available
2-Sample t-Test Compare means of two independent groups Available
Paired t-Test Compare means of paired observations Available
Chi-Square Independence Test association between categorical variables Available
Chi-Square Goodness of Fit Test observed vs expected frequencies Available
Correlation Pearson, Spearman, or Kendall correlation Available
1-Proportion Test Test proportion against a known value Available
2-Proportion Test Compare two proportions Available
F-Test (2 Variances) Compare variances of two groups Available
Mann-Whitney U Nonparametric 2-sample comparison Available
Kruskal-Wallis Nonparametric k-sample comparison Available
Wilcoxon Signed-Rank Nonparametric paired comparison Available
Friedman Test Nonparametric repeated measures Available
Mood's Median Test Nonparametric test of equal medians Available
Sign Test Simple nonparametric paired test Available
Runs Test Test for randomness in a sequence Available
Tukey HSD Post-hoc pairwise comparisons after ANOVA Available
Dunnett's Test Compare treatments against control Available
Games-Howell Post-hoc for unequal variances Available
Dunn's Test Post-hoc after Kruskal-Wallis Available
Normality Check Shapiro-Wilk, Anderson-Darling, D'Agostino Available
Outlier Detection Grubbs, Dixon, IQR methods Available
▼ Regression 10
Linear Regression (OLS) Ordinary least squares with diagnostics (R², F-test, Durbin-Watson) Available
Logistic Regression Binary outcome model with odds ratios and pseudo-R² Available
Poisson Regression Count outcome model with incidence rate ratios Available
Generalized Linear Model GLM with selectable distribution family Available
Ordinal Logistic Regression Proportional-odds model for ordered categorical responses Available
Robust Regression M-estimation resistant to outliers Available
Stepwise Regression Automatic forward/backward predictor selection Available
Best Subsets Regression Exhaustive model search ranked by AIC/BIC/adjusted R² Available
Orthogonal Regression Deming/total least squares with error in both variables (single predictor) Available
Nonlinear Regression Curve fitting to a parametric model (single predictor) Available
▼ Bayesian Analysis 17
Bayesian 1-Sample t-Test Posterior distribution of the mean Available
Bayesian 2-Sample t-Test Posterior comparison of two means Available
Bayesian ANOVA Bayesian multi-group comparison Available
Bayesian Proportion Beta-binomial proportion inference Available
Bayesian Correlation Posterior distribution of correlation Available
Bayesian Regression Linear regression with posterior credible intervals Available
Bayesian A/B Test Probability of superiority between variants Available
Bayes Factor Evidence ratio for hypothesis comparison (from a t statistic) Available
Bayesian Chi-Square Bayes factor for association in a contingency table Standby — catalogued, solver not yet registered
Bayesian Equivalence Posterior of the mean difference / ROPE between two groups Standby — catalogued, solver not yet registered
Bayesian Logistic Beta-binomial inference for a binary outcome Standby — catalogued, solver not yet registered
Bayesian Poisson Gamma-Poisson conjugate rate inference Standby — catalogued, solver not yet registered
Bayesian Meta-Analysis Random-effects pooling of study effects and standard errors Standby — catalogued, solver not yet registered
Bayesian Changepoint Online changepoint detection (BOCPD) Standby — catalogued, solver not yet registered
Bayesian Capability Posterior Cpk with credible interval and conformance probabilities Standby — catalogued, solver not yet registered
Bayesian EWMA Exponentially weighted moving average smoother Standby — catalogued, solver not yet registered
Bayesian Survival Weibull time-to-event fit (shape, scale, B10 life) Standby — catalogued, solver not yet registered
▼ Process Behavior 10
Belief Chart Sequential belief updating for process shifts Available
E-Detector Online change detection with e-values Available
Adaptive Control Limits Self-adjusting control limits Available
Bayesian Cpk Posterior distribution of process capability Available
Regime Segments Label the regimes between known change points Available
Cpk Trajectory Posterior Cpk evolving over observations with narrowing credible interval Available
Predictive Chart Posterior-predictive forecast envelope vs spec limits Available
Evidence Accumulation Cumulative evidence for process state Available
Process Health Composite health score from belief, e-detector and Cpk on one series Available
PBS Full Bundle Complete process belief panel: belief, e-detector, adaptive limits, Cpk + trajectory, prediction, evidence Available
▼ Visualization 12
Histogram Distribution shape with optional density curve Available
Box Plot Quartiles, whiskers, and outliers Available
Scatter Plot Two-variable relationship Available
Pareto Chart Ranked bars with cumulative line Available
Heatmap Correlation or value matrix Available
Dot Plot Individual values along an axis Available
Bubble Chart Three-variable scatter with sized points Available
Parallel Coordinates Multivariate pattern visualization Available
Mosaic Plot Categorical variable association Available
Scatter Matrix Pairwise scatter plots for all columns Available
Interval Plot Mean with confidence interval by group Available
Contour Plot 2D surface contour lines Available
▼ Data Triage 1
Data Triage Profile columns, flag outliers and non-normality before analysis Available
▼ Design of Experiments 3
Model Fit Fit a main-effects, interaction, or quadratic model to experiment results Available
Split-Plot Fit Two-stratum ANOVA for hard-to-change factors — whole plots earn their own error term Available
Split-Plot Fit (unbalanced, REML) Restricted maximum likelihood for split-plots that did not come out balanced — unequal whole plots, missing runs Available
▼ Machine Learning 21
Classification Train and evaluate a classifier Available
Regression Train and evaluate a regression model Available
Discriminant Analysis Linear/quadratic discriminant classification Available
Clustering K-means, hierarchical, DBSCAN Available
PCA Principal component analysis Available
Factor Analysis Latent factor extraction Available
Correspondence Analysis Categorical variable mapping Available
Isolation Forest Anomaly detection Available
Item Analysis Scale reliability (Cronbach's alpha) Available
Feature Importance Rank predictors by importance Available
XGBoost Gradient boosted trees Available
LightGBM Fast gradient boosting Available
SHAP Explanation Feature attribution for model predictions Available
Model Comparison Compare multiple model architectures Available
Hyperparameter Tuning Grid/random/Bayesian optimization Available
Regularized Regression Ridge, Lasso, Elastic Net Available
Bayesian Regression Probabilistic regression with priors Available
Gaussian Process Nonparametric Bayesian regression Available
GAM Generalized additive model Available
PLS Partial least squares regression Available
SEM Structural equation modeling Standby — catalogued, solver not yet registered
▼ Causal Inference 2
PC Algorithm Constraint-based causal structure learning Available
LiNGAM Linear non-Gaussian causal discovery Available
▼ Reliability 8
Weibull Analysis Life data analysis with Weibull distribution Available
Kaplan-Meier Survival curve estimation Available
Accelerated Life Weibull life-data fit for accelerated life test data Standby — catalogued, solver not yet registered
Competing Risks Per-failure-mode Weibull fit Standby — catalogued, solver not yet registered
Repairable Systems AMSAA-Crow (NHPP) reliability growth Standby — catalogued, solver not yet registered
Reliability Test Plan Zero-failure (success-run) sample size Standby — catalogued, solver not yet registered
Warranty Analysis Weibull failure probability at warranty period Standby — catalogued, solver not yet registered
Cox Proportional Hazards Survival regression with covariates Available
▼ Quality Economics 1
Cost of Quality Prevention, appraisal, failure cost breakdown Standby — catalogued, solver not yet registered
▼ Simulation 3
Monte Carlo Stochastic simulation with distribution inputs Available
Input Distribution Fit Fit observed durations to simulation-ready distributions with KS/AIC evidence Available
Warm-up Detection MSER-5 initialization-bias truncation over a time-ordered series Available
▼ Drift Detection 1
Distribution Drift Detect shifts between baseline and current data Standby — catalogued, solver not yet registered
▼ Sequential Testing 1
Anytime Valid Test Confidence sequences with optional stopping Standby — catalogued, solver not yet registered
▼ Interpretability 1
iSHAP Incremental SHAP for streaming feature attribution Standby — catalogued, solver not yet registered
▼ Bayesian MSA 1
Bayesian Gage R&R Measurement system analysis with posterior inference Standby — catalogued, solver not yet registered
▼ D-Type Analysis 1
D-Type Study Destructive testing analysis Standby — catalogued, solver not yet registered
▼ S&OP / Inventory 3
Economic Order Quantity Optimal order size to minimize total cost Available
Supermarket / Kanban Loop How many containers the loop holds so the next process is never starved Available
Safety Stock Buffer inventory calculation Available
▼ ANOVA & Variance 10
One-Way ANOVA Compare means across 3+ groups (single factor) Available
Two-Way ANOVA Two factors with interaction on a numeric response Available
Nested ANOVA Hierarchical factors (inner nested within outer), e.g. batch within plant Available
Split-Plot ANOVA Whole-plot and sub-plot factors, replicated across blocks (whole-plot replicates) Available
Repeated-Measures ANOVA Within-subject conditions (one column per condition, rows = subjects) Available
One-Way MANOVA Multiple response variables compared across groups Available
Hotelling's T² (One-Sample) Multivariate test of a mean vector against a reference Available
Variance Components (One-Way Random) Decompose variance into between-group and within-group sources Available
Partial Pooling (Borrow Strength Across Sites) Estimate a sparse site by pulling it toward the fleet in proportion to how little it knows Available
Analysis of Means (ANOM) Graphical comparison of group means to the grand mean with decision limits Available
▼ Time Series 7
ARIMA Forecast Autoregressive integrated moving average with forecast and stationarity check Available
SARIMA Forecast Seasonal ARIMA with seasonal order and forecast Available
Classical Decomposition Split series into trend, seasonal, and residual components Available
ACF / PACF Autocorrelation and partial autocorrelation with suggested ARIMA order Available
Cross-Correlation Lead/lag cross-correlation between two series Available
Granger Causality Test whether one series predicts another Available
Changepoint Detection (PELT) Detect shifts in the mean via the PELT algorithm Available
▼ Measurement System Analysis 5
Test Uncertainty Ratio The Z540.3 ratio of tolerance span to calibration uncertainty Available
Intraclass Correlation (ICC) Reliability across raters — one column per rater Available
Bland-Altman Agreement Bias and limits of agreement between two measurement methods Available
Attribute Agreement (Fleiss' κ) Inter-rater agreement on categorical ratings — one column per rater Available
Krippendorff's Alpha Inter-rater reliability for any measurement level — one column per rater Available
▼ Power & Sample Size 9
Power — 1-Mean (z/t) Power or sample size for a one-mean test. Leave n blank to solve for n at a target power. Available
Power — t-Test Power or sample size for a t-test (one-sample, two-sample, or paired). Leave n blank to solve for n at a target power. Available
Power — 1 Proportion Power or sample size for one proportion vs a hypothesised value p0. Available
Power — 2 Proportions Power or sample size for comparing two proportions p1 and p2. Available
Power — Variance (Chi-Square) Power or sample size for a chi-square variance test (Cohen's w effect size). Available
Power — ANOVA / DOE Power or sample size per group for a one-way ANOVA (Cohen's f effect size). Available
Power — Equivalence (TOST) Power or sample size for an equivalence test within a margin. Available
Sample Size — Confidence Interval Sample size to achieve a target CI width. Supply std (mean) or proportion. Available
Sample Size — Tolerance Interval Sample size for a tolerance interval at a target coverage and confidence. Available
▼ Quality (Capability & Acceptance) 4
Non-Normal Capability Cnp/Cnpk and PPM out of spec for non-normal data Standby — catalogued, solver not yet registered
Attribute Capability DPU, DPMO, yield and sigma level from defect counts Available
Attribute Acceptance Plan Single-sampling plan (n, c) from AQL/LTPD and risks Available
Variable Acceptance Plan Variables sampling plan (n, k) from AQL/LTPD and risks Available
▼ Distributions & Profiling 12
Distribution Fit Fit candidate distributions and rank by AIC/BIC + KS Available
Fit Named Distribution Fit a single named distribution and report goodness-of-fit (KS, AIC) Available
Box-Cox Transform Power transform toward normality (estimates lambda) Available
Johnson Transform Johnson system transform toward normality Available
Tolerance Interval Interval covering a proportion of the population at a confidence level Available
Bootstrap CI Bootstrap confidence interval for a statistic Available
Descriptive Statistics Full descriptive summary (center, spread, shape) Available
Outlier Analysis Detect outliers via IQR or z-score Available
Effect Size (One-Sample) Cohen's d versus a reference mean Available
Equivalence (TOST) Two one-sided tests for equivalence within a margin Available
Meta-Analysis Pool effect sizes across studies (fixed/random effects) Available
Multi-Vari Analysis Decompose variation across factors Available
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ED. 1.0.0 · BETA
Svend — Analysis Workbench — Ed. 1 165 available · 187 catalogued