When your doing sig figs and you make an action such as average densities, and you end up with an extra sig fig, is there an actual change in the uncertainty if the quantity or is it just a rule of Math.(adsbygoogle = window.adsbygoogle || []).push({});

If I was forced to guess I would say the it was just a mathematical rule.

**Physics Forums - The Fusion of Science and Community**

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

# Sig Fig

**Physics Forums - The Fusion of Science and Community**