Methodological notes published in Economic Trends

This series aims to explain statistical issues relevant to our data in a simple, non-technical way. As well as defining the topic areas, the notes explain when, why and how these methodologies are used within the Office for National Statistics (ONS). Where possible, we also point the reader to further sources of information.

Methodological note: Measures of variability in selected economic time series, Gavin Wallis (November 2006) International comparisons of economic activity, Chowdhury, Sumit Dey (August 2006)
Annual chain-linking, Joe Robjohns (May 2006)
Links between Gross Domestic Product (GDP) and Gross Value Added (GVA) Brereton, M (Feb 2006)
Revisions, Brereton, M (Nov 2005)
Seasonal Adjustment, Brereton, M (Aug 2005)
Hedonics price indices, Brereton, M (May 2005)

This page last revised: Thursday, 16 November 2006