Absolute error
Absolute error = true value - measured val..
Absolute Error and Percentage Relative Error
The difference between these two values is called the absolute error. Absolute Error = Original number - Approximated number The ratio of the absolute error and the original number expressed in percentage form is called percentage re..
Absolute Error and Percentage Relative Error
From the above examples on approximation, we observe that the approximated value may be more or less than the original number. The difference between these two values is called the absolute error. Absolute Error = Original number - Approximated number The rat..
From the above examples on approximation, we observe that the approximated value may be more or less than the original number. The difference between these two values is called the absolute error. Absolute Error = Original number - Approximated number The rat..Relative and percentage errors
Relative error is the ratio of absolute error to true value given b..
Relative error is the ratio of absolute error to true value given b..Experiment to determine the frequency of a tuning fork using a sonometer (absolute method)
. When it is at rest, on placing the vibrating tuning fork on the sound box, the paper rider is found to vibrate vigorously and may be thrown off. The resonating length AC = L is measured using a metre scale. The experiment is repeated by gradually increasing the load W 2 in steps of 1Kgwt. The rea..
. When it is at rest, on placing the vibrating tuning fork on the sound box, the paper rider is found to vibrate vigorously and may be thrown off. The resonating length AC = L is measured using a metre scale. The experiment is repeated by gradually increasing the load W 2 in steps of 1Kgwt. The rea..Constant errors
If the same error is repeated every time in a series of observations, the error is said to be constant error. Constant error is due to faulty calibration of the scale of a measuring instrument. In order to minimise the constant error, measurements ..
Errors due to imperfection
Sometimes, even if the error is known, it cannot be corrected due to imperfection in the experimental arrangement. e.g., Loss of heat due to radiation in calorimetry. These errors always exist, but observations can be correcte..
Errors in measurement
When we make use of various measuring instruments, we encounter various types of errors. They ar..
Random errors
These are irregularly occurring errors, which are at random, in magnitude and direction. They are not due to any definite cause and hence, are called accidental errors. A person may get different readings while experimenting, say, for E.g., while measuring the diamete..
These are irregularly occurring errors, which are at random, in magnitude and direction. They are not due to any definite cause and hence, are called accidental errors. A person may get different readings while experimenting, say, for E.g., while measuring the diamete..Percentage Error
While reading the length of a simple pendulum or the length of a resistance wire or while finding the weight of a body using spring balance, mass by a beam balance etc., we are likely to make mistakes. The percentage error can be calculated by using the formula. Percentage error..
While reading the length of a simple pendulum or the length of a resistance wire or while finding the weight of a body using spring balance, mass by a beam balance etc., we are likely to make mistakes. The percentage error can be calculated by using the formula. Percentage error..See what our Users say :
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