Statistical Disclosure Control (SDC) Quiz

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Statistical Disclosure Control (SDC) Quiz#

Last modified: 16 Jul 2025

This quiz tests your understanding of UK LLC's Statistical Disclosure Control (SDC) rules.

This quiz acts as a refresher to the Office for National Statistics Accredited Researcher Training that all UK LLC users are required to undertake.

Click here full details on the SDC rules UK LLC enforces on all information leaving the UK LLC Trusted Research Environment (TRE).

1. What is the UK LLC ‘low count’ threshold?#

2. Which methods can you use to avoid low counts in output files?#

3. Which accompanying information about the variable ‘w1edu’ is sufficient?#

4. Which symbols can you use to mask low counts?#

5. When you suppress values what else do you need to do?#