Tag Archive | Control Charts For Variables

Control Chart Classifications

Classifications of control charts are depending on the type of data:

1.Variables data

  • A characteristic measured on a continuous scale resulting in a numerical value
  • Examples: Void Size, Bond Pull Strength, Coplanarity, Ball Height, etc.

2.Attributes data

  • A characteristic measured by # of conforming & non-conforming to a specification.  Output is classified as pass/fail or accept/reject.
  • E.g. Broken Wire, Lifted Bond, FM, Chipping, Bent Lead,  etc.
  • Can be expressed in terms of fraction, percentage, count or DPM

 

Control Charts For Variables

Control Charts For Variables

Control Charts For Variables

Control Charts For Attributes

Control Charts For Attributes

Control Charts For Attributes