Question

In average volume, relative standard deviation and relative error which describes the precision and which describes the accuracy of a piece of glassware

Answer 1

Accuracy is a measure of how close your Experimental Value is, to the Theoretical (true) Value.

And it is obtained by calculating the Relative Error which is given by : -

Relative Error = | Experimental Value - Theoretical Value | / Theoretical Value

Smaller the value of relative error, more accurate the measurement is.

Precision is a measure of how close the consecutive measurements of an experiment are to each other.

And it can be observed by calculating the Standard Deviation.

Standard deviation shows how much do the different measurements deviate from the mean of those measurements.

Relative Standard Deviation is obtained by multiplying the Standard Deviation by 100 and dividing it by the mean of the measurements.

Lower the Relative Standard Deviation is, higher is the Precision.