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. The data you ...

The title tells you what the bar chart is about. The vertical and horizontal lines are called axes. The horizontal line is called the 𝒙-axis. The vertical line is the 𝑦-axis. Both axes are ...

The title tells you what the bar chart is about. The vertical and horizontal lines are called axes. The horizontal line is called the 𝒙-axis. The vertical line is the 𝑦-axis. Both axes are ...