Hello,(adsbygoogle = window.adsbygoogle || []).push({});

I have taken 5 samples and found that my average concentration is 5 mg, with a range of .003 mg in either direction. I would like to calculate the variance with only this information.

Is this possible? I am used to calculating the variance from the standard deviation, but I don't have this available.

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

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!

# Calculating variance from range

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