Interactive X-bar and R Control Chart
Simulates a bore-diameter process (target 25.000 mm, tolerance ±0.010 mm). Add points manually or run auto-mode. Adjust σ to see capability change.
σ (mm):
0.004
Mean shift:
+0.002
+ Add point
▶ Auto
Reset
X-bar chart (subgroup size = 5)
R chart (range)