Statistical Tests
Statistical diagnostics and analytical validation tools for engineering and quality applications. Use these tools to evaluate distribution shape and group-to-group consistency before capability analysis, SPC, or other process studies.
Upload a CSV file, select a measurement column, and evaluate whether the data passes the skewness-kurtosis normality check. The histogram displays the measured data with a red normal-curve overlay.
Open Normality TestSplit sequential data into groups and evaluate variance consistency using a Levene/Brown-Forsythe-style check, along with ANOVA for differences between group means.
Open Homogeneity TestEvaluate a measurement system using part identifiers and repeated measurement values. The tool reports variance components, ICC, signal retained, and Short EMP monitor classification.
Open Short EMP StudyBuild an Individuals and Moving Range chart for sequential measurement data. The tool estimates sigma from the average moving range, calculates control limits, and highlights control-limit signals.
Open I-MR Chart