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Errors:
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1. A continuous variable can never be
measured with perfect finances because of certain habit and practices, method
of measurements etc.
2. Measurements are usually recorded to the
nearest units i.e. inch, pound, k.g etc.
3. They are therefore seldom exact, mostly
they are approximate, “the difference between the measured value and the true
value” however small it may be is called the error of measurements. e.g. if a
student’s weight is recorded as 60 kg (correct the nearest k.g) is true
weight infect lies between 59.5 kg and 60.5 kg. These there is the difference
between the measured value and the true value.
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