Select a chart type to start your SPC analysis
IHI standard — median baseline, shift/trend detection, auto-phase
Individual values with Moving Range — 8 Western Electric rules
Subgroup means and ranges — for n = 2–10
Subgroup means and standard deviations — for n > 10
Proportion defective — dynamic limits per subgroup size
Defects per unit — dynamic limits per subgroup size
Number of defectives — fixed subgroup size
Count of defects — fixed area of opportunity
8
Chart Types
28+
Decimal Precision
12
Statistical Rules