Tips and Tricks on Measurement


The 'INTERNATIONAL SYSTEM OF UNITS', abbreviated SI, defines the seven quantities and the specific methods to build up a physical standard for each, called the unit

Fundamental Quantities--Length (meter), Mass (kilogram), Time (second), Electric current (ampere), Thermodynamic temperature (kelvin), Amount of substance (mole), Luminous intensity (candela)

Errors can be classified in two ways. First classification is based on the cause of error. Systematic errors and random errors fall in this group. Second classification is based on the magnitude of error. Absolute error, mean absolute error and relative (or fractional) error lie on this group.

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