VYRCO / Quality and measurement

Individuals and moving-range chart

Examine a time sequence with calculated individual and moving-range limits.

Free · no accountv1.0 · 2026-10-10Private inputs in your browser

Individuals and moving-range chart

VYRCO · v1.0 · https://vyrco.com/en/tools/imr-chart/

Input data

Numbers: use a decimal point or comma, without thousands separators. Complete fields unless marked optional.

Preparing the tool…

Your inputs are processed here and are not sent to VYRCO. There is no autosave: download your project before closing or switching languages. Opening JSON reads a local file; it does not upload it. CSV includes inputs and results. For PDF, use Print / PDF and select Save as PDF.

How to use it

Keep chronological order for one variable and unit.
Review values without automatically deleting points.
Use the table and limits as investigation signals; establish an appropriate baseline separately.

Fictional example

NIST numerical example: mean 50.81; mean MR≈1.8778; I limits≈45.8159 and 55.8041.

Method

MRi=|xi−xi−1|; estimated sigma=mean MR/1.128. I limits=mean±3·sigma. For pairs, MR limits=0 and 3.267·mean MR. Only points strictly outside limits are flagged.

Scope and limitations

Exploratory limits calculated from the same data; two observations permit calculation but do not establish a reliable baseline. Assumes comparable data without relevant autocorrelation. No run rules; does not establish stability or replace specification limits.