Methodology topics and statistical concepts

The role of the Methodology Group in ONS

An introduction to index numbers, which are used to measure changes and simplify comparisons.

All aspects of sampling, and making inferences about populations.

An introduction to seasonal adjustment, which is widely used in official statistics as a technique for enabling timely interpretation of time series data.

Best practice for applying disclosure control to data.

How we strive to maintain quality standards in our statistics.

Overview of Office for National Statistics' revisions and correction of errors policies.

Frequently asked questions about official statistics in development.

Details about the admin data we use and or have saved.

Explaining measures of uncertainty such as standard error, confidence interval, coefficient of variation and statistical significance and how they affect estimates from our surveys.