Measurement (Numerical)

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Measurement (Numerical)

Different from 'Pure Numbers'

Ther is always some uncertainty in value

arising from

Random Error

results in

Scatter of Repeated Measurement

characterized by

Range of Observed Values

caused by

'noise' Fluotations in Values

Limit on observing a Continuous Range of Values on a Measuring Scale having finite increment

Systematic Error

Causes denation of mean from True Value

determines

Accuracy of Measurement

precision of measurement

Increase with Number of Replicate Measurements

can be expressed as

Relative Uncertainty

Absolute Uncertainty