I-MR
Separate the observations used to establish limits from later monitoring data and identify special-cause signals.
Your data
One value per row in time order, minimum 3 values. The observations declared as baseline estimate the limits; the remaining observations are monitored with those fixed limits.
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
I and MR limits are estimated only from the declared baseline and then kept fixed for monitoring. WECO rules are detection tools; a signal calls for investigation, not automatic adjustment.
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.