Discrete Data Analysis (DDA)

What?

The Discrete Data Analysis (DDA) method is a tool used to assess the variation in a measurement system due to reproducibility, repeatability, and/or accuracy. This tool applies to discrete data only.


Why?

1. It helps to independently asses the most common types of measurement variations - repeatability, reproducibility, and/or accuracy.
2. It helps to determine if the variation due to repeatability, reproducibility, and/or accuracy in the measurement system is an acceptable small portion of the total observation



When?

1. When determining if the variation due to repeatability, reproducibility, and/or accuracy in the measurement system is an acceptable small portion of the total observed observation or not.