I know that RAD is used to expression precision, and I know the formula for it:(adsbygoogle = window.adsbygoogle || []).push({});

Per mil RAD = (abs. deviation)/mean X (1000) for parts per thousand.

Once you find the relative average deviation--this number in ppt--what is the significance of it? What is it supposed to tell you about the data? What does this number represent?? :uhh:

This is probably an elementary topic, but I can't seem to grasp a concrete definition and how it applies to experimental data.

Thanks.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Relative Average Deviation - RAD

**Physics Forums | Science Articles, Homework Help, Discussion**