iii) Define Error and state its types.
Answers
Definition: The measurement error is defined as the difference between the true or actual value and the measured value. The true value is the average of the infinite number of measurements, and the measured value is the precise value.
The error may arise from the different source and are usually classified into the following types. These types are
Gross Errors
Gross ErrorsSystematic Errors
Gross ErrorsSystematic Errors Random Errors
Gross ErrorsSystematic Errors Random ErrorsGross Errors
The gross error occurs because of the human mistakes. For examples consider the person using the instruments takes the wrong reading, or they can record the incorrect data. Such type of error comes under the gross error. The gross error can only be avoided by taking the reading carefully.
Systematic Errors
The systematic errors are mainly classified into three categories.
Instrumental Errors
Instrumental ErrorsEnvironmental Errors
Instrumental ErrorsEnvironmental ErrorsObservational Errors
Random errors:- the error which is caused by the sudden change in the atmospheric condition, such type of error is called random error. these type of error remain even after the removal of the systematic error. hence such type of error is called as random errors.
Minimising errors:
These errors can be minimised by using proper instruments, improving the experimental procedure and removing personal bias.
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Answer:
Answer:
The difference between the observed the calculated value and true value is known as error.
Types of error :-
Gross errors or mistakes :-
Blunders
Computational errors
Chaotic errors
Systematic errors :-
Instrument errors
Environment errors
Determination errors
Constructional error
Random errors
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