Statistical Process Control-Variable Control Charts


Why Control Charts

  • Understand Process Variation to achieve state of
  • Statistical Control
  • When Process is in Statistical Control, its performance is predictable
  • Further reduction of common causes variation
  • Common language for communicating Process performance
  • More precise and accurate technique

How to develop control chart

  • Select the Subgroup Size
    • Process Variation Detection
  • Select Subgroup Frequency
    • Detect change in the Process over span of time
  • Select No. of Subgroups
    • Major source of variation incorporate

Next:- Average Range Control Charts (X̄-R Charts)


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s