IMR-R Chart

This node outputs SPC IMR-R Chart and performs control tests.

Type

SPC-Chart

Class

fire.nodes.graph.NodeSpcIMRRChart

Fields

Name	Title	Description
title	Title
titleColor	Title Color
description	Description
descriptionColor	Description Color
measurements	Measurements Columns	Measurements column names
identifier	Identifier Columns	Identifier column names
test1	point beyond the control limits
test2	k or more consecutive points are one side of the centerline
test3	k or more consecutive points are increasing or decreasing
test4	k consecutive points alternate up or down
test5	k out of k+1 consecutive points are one side of the centerline
test6	k out of n consecutive points are one side of the centerline

Details

The I-MR-R chart in Statistical Process Control (SPC) is a variation of the I-MR chart, designed for monitoring individual measurements and ranges across subgroups. The “I” chart tracks individual data points, the “MR” chart monitors the moving range between consecutive points, and the “R” chart shows the range within subgroups, helping to detect variability. This chart is useful when dealing with processes where subgroup size is small or where both individual observations and subgroup variation need monitoring. It helps ensure process stability by identifying shifts, trends, and variability, ensuring the process stays within control limits.