# If you are calculating the standard deviation of measurements, how do you determine how many significant figures to use?

##### 1 Answer

Nov 1, 2015

If you want to be very accurate go for 5 significant figure.

#### Explanation:

This is my personal experience.

For ordinary class room calculations, two significant figure will do.

When accuracy is required go for not less than five digits.

I experimented in the Regression Analysis.