Individuals Control Chart: Using Control Charts with Limited Data

Learn about Individuals (X-mR) Charts - what it is, when to use, how to construct it and how to interpret it. Discover how easily control charts can be used with limited data.
Quickly make your own Individuals Chart by downloading the free demo:
www.spcforexcel.com/spc-softw...
Keep learning about SPC from our 215+ acclaimed Knowledge Base articles: www.spcforexcel.com/spc-knowl...
Support our Channel - Subscribe and Comment😊

[@angelalopespinto4345]

Making simple a complex thought.

[@SPCforExcel]

Thank you!

[@mattiasthalen]

I have two questions: I have 10 years of daily data, do I start from day 1 or should I throw away the historical data and start fresh? When rule 2 (8 consecutive points above the average) tells me it’s time to recalculate the chart, should I have a freeze period before another recalculation can be triggered?

[@SPCforExcel]

Hello, please see our SPC Knowledge Base article on when to calculate, lock and recalculate control limits. www.spcforexcel.com/knowledge/control-chart-basics/when-calculate-lock-and-recalculate-control-limits A lot has probably changed in the process in 10 years; i would probably start with one year and see what it tells me. Bill