Annex D: Glossary of Terms

Data ZoneA Data Zone (DZ) is a unit of population in Scotland of 500 to 1,000 household residents.
Digital Economy ActThis is an act of Parliament allows data sharing between government departments in order to provide ‘Digital Government’.
Dynamic Population Model (DPM)The Dynamic Population Model (DPM) is a statistical model that estimates population in a timely way, to better respond to user needs. The DPM draws strength from a range of data sources including administrative and survey data. The DPM produces fully coherent estimates of population counts and changes due to births, deaths, international and internal migration.
Efficiency frameworkThe framework that ONS uses to provide guidance and governance for the identification, planning, monitoring and delivery of efficiencies.
Enterprise levelOrganisational level.
Geographical distributionStatement of the distribution of species, demographic groups by country and / or region.
Gross Domestic Product (GDP)Gross domestic product is a monetary measure of the market value of all the final goods and services produced in a specific time period by a country or countries. GDP is most often used by the government of a single country to measure its economic health.
Gross Value Added (GVA)Gross value added (GVA) is an economic productivity metric that measures the contribution of a corporate subsidiary, company, or municipality to an economy, producer, sector, or region. GVA is the output of the country less the intermediate consumption, which is the difference between gross output and net output.
Levelling UpLevelling up is a political policy that aims to reduce the imbalances, primarily economic, between areas and social groups across the United Kingdom without acting to the detriment of prosperous areas.
Lower Layer Super Output AreasA Lower layer Super Output Area (LSOA) is a unit of population in England and Wales 1,000 to 3,000 people (400 to 1,200 households).
Magenta BookThe Magenta Book provides guidance on evaluation in government: its scoping, design, conduct, use and dissemination as well as the capabilities required of government evaluators. Evaluation should be built into an intervention’s design and delivery from the earliest stages, increasing understanding of who is affected and in what way.
Net ZeroNet zero refers to a government commitment to ensure the UK reduces its greenhouse gas emissions by 100% from 1990 levels by 2050.
Organisational Theory of ChangeThe organisational Theory of Change sets out ONS' intended outcomes and impacts and aligns these to our activities, including the Strategic Objectives and major transformation programmes, to illustrate which areas of the business we expect to contribute towards each outcome and impact. The model is aligned to the current UKSA Strategy and is used to assess performance against our intended outcomes and impacts through monitoring and evaluation activities.
Private Beta / Public BetaA stage in Agile project delivery, the beta phase is where you take your best idea from the alpha discovery phase and start building it for real, thinking about how your service will integrate with (or start to replace) existing services, and preparing for the transition to live.

Private beta involves inviting a limited number of people to use your service so you can get feedback and improve it.

Once you’ve improved the service and are confident you can run it at scale, you take an assessment to move into ‘public beta’, which is where the service is available for any member of the public to use.
Respiratory pathogensA virus, bacteria or other organism that causes illness in the parts of your body that are involved in breathing.
Spending ReviewA Spending Review is the governmental process in which departments bid to secure their financial budgets from HM Treasury.
SubnationalA region or group within a nation.
Super Output AreasSuper Output Areas (SOA) is a unit of population in Northern Ireland of 300 to 6,000 people.
Trusted Research EnvironmentA TRE or Trusted Research Environment is a research facility (normally accredited under the Digital Economy Act) that provides secure and lawful access to unpublished and de-identified data for analytical research. To ensure safe use of data that’s made available, TREs operate under the ‘5 Safes Framework’ (About the Secure Research Service - Office for National Statistics (
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