f Crash Date Dimension - Wiki

# Crash Date Dimension

(Difference between revisions)
 Revision as of 11:37, 9 October 2009 (view source)Bwalton (Talk | contribs)← Older edit Current revision as of 15:23, 13 April 2010 (view source) (2 intermediate revisions not shown) Line 1: Line 1: The Crash Date Dimension is a MAST [[dimension]] which defines a convenient approach to summarising data by chronology.  It is based on the date when each [[crash]] occurred according to [[STATS19]] returns. The Crash Date Dimension is a MAST [[dimension]] which defines a convenient approach to summarising data by chronology.  It is based on the date when each [[crash]] occurred according to [[STATS19]] returns. - Crash Date is arranged into three levels, representing the year, the quarter and the calendar month when a crash occurred.  This structure is a very good [[Dimension Example|example]] of how a diemnsion is typically structured. + Crash Date is [[Dimension Example|arranged into three levels]], representing the year, the quarter and the calendar month when a crash occurred. Crash Date does not represent precise days of each month, nor the days of the week.  However, the [[Day of Week]] dimension provides an alternative approach to analysing data chronologically. Crash Date does not represent precise days of each month, nor the days of the week.  However, the [[Day of Week]] dimension provides an alternative approach to analysing data chronologically. + + The [[Hour of Day]] dimension is provided for analysing crashes by the time of day at which they occurred.

## Current revision as of 15:23, 13 April 2010

The Crash Date Dimension is a MAST dimension which defines a convenient approach to summarising data by chronology. It is based on the date when each crash occurred according to STATS19 returns.

Crash Date is arranged into three levels, representing the year, the quarter and the calendar month when a crash occurred.

Crash Date does not represent precise days of each month, nor the days of the week. However, the Day of Week dimension provides an alternative approach to analysing data chronologically.

The Hour of Day dimension is provided for analysing crashes by the time of day at which they occurred.