Errors, Systematic Error, Random Error

by • 10/09/2013 • GeneralComments (0)401

Errors:

There are two types of errors and deviations are found in analysis:

1.            Determinate or Systematic Error

2.            Indeterminate or Random Error

Systematic Error:

The errors caused by the defect in the analytical method or by the improper functioning of instrument are called ‘Systematic Error’. For example: Use of improper cleaned or rinsed glasswares, improper prepared indicators, impurity in concentrations etc.

Random Error:

There is some uncertainty found in every physical measurement. The errors that these variations indicate are called ‘Random Error’. Random Errors are unavoidable and could be positive or negative. For a more exact measurement average of several replicate measurements is taken.

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