What are various causes for errors in measurement?

What are different types of errors measurements made by instruments?

What are various steps of decomposition process?

What are various types of systematic errors ?

Show that the relative error in the volue of a sphere due to an error in measurement of radius is thhree times the relative error in radius.

If P = x-y, then the maximum percentage error in the measurement of P is :

If a physical quntity is P = (a^3 b^2)/c and the percentage errors in the measurement of a,b and c are 1%,2% and 3% respectively.Find the maximum percentage error in the measurement of physical quantity P.