Control Chart Selection Wizard
Answer a few questions to find the right control chart for your process
What type of data are you monitoring?
This is the first key question in selecting a control chart
A quality engineer facing a new monitoring requirement is unsure which SPC control chart to use. The Chart Wizard asks a few guided questions (data type, sample size, proportion data or not) and automatically recommends the most suitable chart type, avoiding wrong choices that invalidate the analysis or reduce sensitivity. Especially useful for factories just adopting SPC, or engineers who need to set up monitoring for a new process quickly — get a professional chart selection in under a minute.
Case 1: SMT soldering, 5 boards sampled per shift, solder joint height measured (continuous) → Variable data + subgroup of 5 → recommend X̄-R chart Case 2: Solder paste printing, defective count recorded per lot (attribute, fixed sample of 200) → Attribute data + defect rate monitoring → recommend p-chart Case 3: Welding station, 1 destructive pull test per lot (continuous, n=1) → Variable data + individual values → recommend I-MR chart
FAQFAQ
Related Tools
Control Chart (X̄-R)
When the wizard recommends a variable control chart, X̄-R is the most common first choice — ideal for process data measured in subgroups of 2–10.
Open toolp-Chart (Defect Rate)
When the wizard recommends an attribute chart, the p-chart is the most versatile choice for monitoring per-lot defect rates on most shop floors.
Open toolI-MR Control Chart
When the wizard recommends an individuals chart, I-MR is the standard choice for destructive testing or slow processes with one measurement at a time.
Open tool