New data analysis and visualisation service

Statistical Analysis without Statistical Software

The Data Library now has an SDA server (Survey Documentation and Analysis), and is ready to load numeric data files for access by either University of Edinburgh users only, or ‘the world’. The University of Edinburgh SDA server is available at: http://stats.datalib.edina.ac.uk/sda/

SDA provides an interactive interface, allowing extensive data analysis with significance tests. It also offers the ability to download user-defined subsets with syntax files for further analysis on your platform of choice.

SDA can be used to teach statistics, in the classroom or via distance-learning, without having to teach syntax. It will support most statistical techniques taught in the first year or two of applied statistics. There is no need for expensive statistical packages, or long learning curves. SDA has been awarded the American Political Science Association Best Instructional Software.

For data producers concerned about disclosure control, SDA provides the capability of defining usage restrictions on a variable-by-variable basis. For example, restrictions on minimum cell sizes (weighted or unweighted), use of particular variables without being collapsed (recoded), or restrictions on particular bi- or multivariate combinations.

For data managers and those concerned about data preservation, SDA can be used to store data files in a generic, non-software dependant format (fixed-field format ASCII), and includes capability of producing the accompanying metadata in the emerging DDI-standard XML format.

Data Library staff can mount data files very quickly if they are well documented with appropriate metadata formats (eg SAS or SPSS), depending on access restrictions appertaining to the datafile. To request a datafile be made available in SDA, contact datalib@ed.ac.uk.

Laine Ruus
EDINA and Data Library

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