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News & opinion

17 APR 2018

What’s in an index?

When using BCIS or any published indices it is important to understand how they are calculated. Most of the indices on the BCIS online database have detailed notes and definitions describing their calculation.

Subscribers can find the notes and definitions for an index series by clicking on the connection in the ‘?’ icon shown when a series is selected.

To find the notes and definitions for a particular index series follow the steps below:

  1. Select ‘Indices’ in the main menu on the left hand side of the home page.
  2. Select an ‘Indices category’.
  3. Select an index and click on ‘close and apply’.
  4. Go to results by clicking either in the bar at the top of the page or the tab at the bottom.
  5. Against the title of each series you will see the ‘?’ icon. Hover over the ‘?’ icon to see the link to the notes and definitions for that series.
  6. Click on the link to go to the notes and definitions

Alternatively, click on 'Help' at the top of any page and select 'Documentation'. If you then expand 'Documents from Indices' you can see a list of relevant documents.

The notes and definitions will typically include:

  • introduction
  • coverage
  • application and relevance
  • publication
  • revisions policy
  • range
  • calculation method
  • base date

Non-subscribers requiring definitions of the indices should contact the BCIS team

The following series are also avaliable: