index number is a special type of
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An index number is a specialized type of average. An average is a single figure representing a group of figures. Averages are used to compare two or more series as they represent their central tendencies. ... But the device of index numbers helps us in comparing change in series which are in different units.
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an index number is a specialised type of average. an average is a single figure representing a group of figures. average average are used to compare two or more series as they represent their Central tendencies
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