Advanced 2² factorial DOE
Effects, interaction, half-normal screening, residual diagnostics and centre points for curvature screening.
Your data
Three columns A;B;Y. Factorial corners use −1/+1; optional centre points use 0;0. All four factorial combinations and equal corner replication are required.
CSV/TXT without a header or pasted from Excel. Separator: semicolon or TAB; decimal separator: dot or comma. Maximum 200 observations in total, not 200 per group. Data is processed in the browser and is not uploaded to the server.
About the calculation
Main effects and interaction. Tests require replication and non-zero residual variation.
Calculations run locally in the browser. Statistical distributions and functions use jStat 1.9.6; values are rounded only for display. For method selection, conditions of use and interpretation criteria, see the “Sources and methodological alignment” section above and any customer-specific requirements.
Ready for your data
Upload a dataset or use the example, then click “Calculate results”. Results will include charts, values and interpretation conditions.