Key Points X-bar and R charts are useful control charts for use with rational subgroups. X-bar measure between-sample variation. R charts measure within-sample variation. All processes vary.

Racing bar charts can be a useful way to visualize comparative data over time. There are a number of ways to create them in R, including combining ggplot with gganimate or using echarts4r.But the ...

Different types of quality control charts, such as X-bar charts, S charts, and Np charts are used depending on the type of data that needs to be analyzed. Example of a Quality Control Chart .