These errors can be removed by :
o Taking proper instrument and calibrating it properly . o Experimenting under proper atmospheric conditions and techniques . Removing human bias as far as possible
Random Errors Errors which occur at random with respect to sign and size are called Random errors .
o These occur due to unpredictable fluctuations in experimental conditions like temperature , voltage supply , mechanical vibrations , personal errors etc .
o Smallest value that can be measured by the measuring instrument is called its least count . Least count error is the error associated with the resolution or the least count of the instrument .
o Least count errors can be minimized by using instruments of higher precision / resolution and improving experimental techniques ( taking several readings of a measurement and then taking a mean ).