Glossary

What is data sampling?

Data sampling means a tool analyses only a part of your data and estimates the rest.

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What is data sampling?

With very large datasets, some analytics tools calculate reports from a sample to save processing time. This makes results faster but less exact.

Sampling can also apply to advanced reports and long date ranges.

Why Data sampling matters

  • It can make numbers differ between reports.
  • It matters for small segments and rare events.

Practical tips

  • Check whether your tool samples data.
  • Narrow the date range or use exports when you need exact figures.

Data sampling in Noralytic

Noralytic does not sample. Reports are calculated from all recorded page views.

Frequently asked questions

What is data sampling?

Data sampling means a tool analyses only a part of your data and estimates the rest.

Does Google Analytics sample data?

GA4 may apply sampling or thresholds in some reports and explorations, depending on data volume and settings.

Data retentionData retention is how long an analytics tool keeps your data before deleting it. PageviewA pageview is recorded each time a page of your website is loaded or a new page is shown in the browser. Unique visitorA unique visitor is one person or device counted once in a given period, no matter how many pages they open.

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