Multiple choice six-sigma green-belt

Which of the following is not used in case of discrete data

  1. p-chart

  2. np-chart

  3. X-bar S chart

  4. c-chart
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Different control charts are used for different data types. p-charts, np-charts, and c-charts are all designed for discrete/attribute data (proportions, counts, defects). X-bar S charts are specifically used for continuous variable data to monitor process mean and variability. Therefore, X-bar S chart is the correct answer as it is not used for discrete data.

Keep practicing — related questions