1332.0.55.002 - Statistical Language!, 2008  
ARCHIVED ISSUE Released at 11:30 AM (CANBERRA TIME) 27/06/2008  First Issue
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Contents >> Index >> Definition


An Index is a number used to show the variation in some quantity over time. It is usual to fix the first observation (sometimes called a benchmark) to a base value of 100, then having all the following observations linked to this base to compare any relative changes over time. It is a type of time series data.

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