An r chart is a type of control chart used in statistical process control to monitor the variability of a process over time. It specifically tracks the range of variability within a sample, providing insights into the consistency and stability of a production process. By plotting the range of data points for subsets of samples, it helps identify trends or shifts in process variation, which can signal potential issues that may require attention.
congrats on reading the definition of r chart. now let's actually learn it.